☆ 4.8 Review

Luminescence and Degeneration Mechanism of Perovskite Light-Emitting Diodes and Strategies for Improving Device Performance

SMALL METHODS (2023)

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Review Optics

Red Perovskite Light-Emitting Diodes: Recent Advances and Perspectives

Yi Yu et al.

Summary: Metal halide perovskite materials have great potential for next-generation optoelectronic devices, but the commercialization of red perovskite LEDs is hindered by their instability and toxicity. This review discusses the structures, properties, and preparation approaches of red emissive perovskite materials, as well as the strategies to improve the performance of red PeLEDs. Challenges and potential solutions are also discussed.

LASER & PHOTONICS REVIEWS (2023)

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Article Chemistry, Physical

Ultrathin Light-Emitting Diodes with External Efficiency over 26% Based on Resurfaced Perovskite Nanocrystals

Qun Wan et al.

Summary: Light-emitting diodes (LEDs) based on perovskite nanocrystals (PNCs) have attracted great attention for their high color purity, brightness, and luminous efficiency. However, the development of effective light outcoupling strategies to further enhance device performance is still a challenge.

ACS ENERGY LETTERS (2023)

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Article Chemistry, Physical

Molecular Bridging Strategy Enables High Performance and Stable Quasi-2D Perovskite Light-Emitting Devices

Xinyu Bao et al.

Summary: The introduction of 4'- (aminomethyl)-biphenyl-3-carboxylic acid (4-ABCA) improved the phase distribution in the PEA2(FAPbBr3)2PbBr4 film and enhanced the energy transfer efficiency of carriers, leading to an external quantum efficiency (EQE) of 23.15% and a maximal brightness of 133,560 cd/m2 in the green perovskite light-emitting diodes (PeLEDs).

ACS ENERGY LETTERS (2023)

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Article Chemistry, Multidisciplinary

Minimizing Energy Barrier in Intermediate Connection Layer for Monolithic Tandem WPeLEDs with Wide Color Gamut

Run Wang et al.

Summary: This study successfully developed the first monolithic tandem multicolor perovskite LED and white LED, solving issues such as solvent incompatibility, ion exchange, and energy transfer between different emission centers by utilizing an optimal intermediate connection layer. The multicolor LED achieved the best external quantum efficiency of 1.8% and the highest luminance of 4844 cd m(-2). The monolithic white LED reached a color gamut of 130%, offering a feasible strategy for developing wide-color gamut perovskite displays.

ADVANCED FUNCTIONAL MATERIALS (2023)

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Article Chemistry, Multidisciplinary

Manipulating Ionic Behavior with Bifunctional Additives for Efficient Sky-Blue Perovskite Light-Emitting Diodes

Wei Zhou et al.

Summary: This study has successfully achieved spectrally stable emission of blue PeLEDs by using bifunctional passivators of Lewis-base benzoic acid anions and alkali metal cations. By passivating the under-coordinated lead atoms and suppressing halide ion migration, the performance of the devices has been improved significantly, achieving high external quantum efficiency.

ADVANCED FUNCTIONAL MATERIALS (2023)

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Review Chemistry, Multidisciplinary

Broadband Emission Origin in Metal Halide Perovskites: Are Self-Trapped Excitons or Ions?

Feng Jiang et al.

Summary: The appearance of metal halide perovskites allows for efficient and broadband emission in single-component materials. The characteristics of self-trapped excitons and ns(2) ions play important roles in achieving broadband emission.

ADVANCED MATERIALS (2023)

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Article Chemistry, Multidisciplinary

A Multifunctional Additive Strategy Enables Efficient Pure-Blue Perovskite Light-Emitting Diodes

Yongjie Liu et al.

Summary: Efficient and stable pure-blue PeLEDs are achieved by controlling phase distribution, passivation of defects, and surface modifications using multifunctional phenylethylammonium trifluoroacetate (PEATFA) in reduced-dimensional p-F-PEA(2)Cs(n-1)Pb(n)(Br0.55Cl0.45)(3n+1) polycrystalline perovskite films. The use of PEA(+) instead of p-F-PEA(+) results in large-n low-dimensional perovskites, which facilitate charge transport. The interaction between TFA(-) and perovskites reduces defects, and the -CF3 group in TFA- enhances electronic injection. This additive strategy improves radiative recombination and carrier transport, leading to a maximum EQE of 11.87% at 468 nm, the highest reported for pure-blue PeLEDs.

ADVANCED MATERIALS (2023)

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Article Multidisciplinary Sciences

Bright and stable perovskite light-emitting diodes in the near-infrared range

Yuqi Sun et al.

Summary: Perovskite LEDs with exceptional performance at high brightness have been achieved by introducing a multifunctional molecule that removes non-radiative regions and suppresses luminescence quenching at the interface. These LEDs show a peak EQE of 23.8% at 33 mA cm(-2) and retain EQEs more than 10% at high current densities of up to 1,000 mA cm(-2). An operational half-lifetime of 32 h at high brightness has been achieved, representing the best stability for perovskite LEDs.

NATURE (2023)

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Article Optics

Highly bright and stable single-crystal perovskite light-emitting diodes

Wenjing Chen et al.

Summary: By minimizing the trap density using mixed cations and excess ammonium halides and polyvidone as precursors, the use of in situ solution-grown perovskite single crystals (SCs) can mitigate ion migration and severe Auger recombination, resulting in increased device lifetime and brightness.

NATURE PHOTONICS (2023)

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Article Optics

Efficient all-thermally evaporated perovskite light-emitting diodes for active-matrix displays

Jinghui Li et al.

Summary: All-thermal evaporation enables the fabrication of perovskite LEDs and active-matrix displays with high efficiency and resolution. A tri-source co-evaporation strategy with a multifunctional Lewis-base additive is developed to improve the quality of perovskite films. Green PeLEDs with a peak external quantum efficiency of 16.4% and active-matrix PeLED displays with high-definition images and videos are achieved.

NATURE PHOTONICS (2023)

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Article Multidisciplinary Sciences

Thermal tolerance of perovskite quantum dots dependent on A-site cation and surface ligand

Shuo Wang et al.

Summary: A detailed picture of temperature dependent behavior of Cs(x)FA(1-x)PbI(3) perovskite quantum dots is constructed by in situ optical spectroscopic and structural measurements. The thermal degradation mechanism depends on both the exact chemical composition and the ligand binding energy. Cs-rich quantum dots undergo a phase transition from black gamma-phase to yellow delta-phase, while FA-rich quantum dots directly decompose into PbI2. Quantum dot growth is observed at elevated temperatures. FA-rich quantum dots exhibit stronger electron-longitudinal optical phonon coupling, leading to a higher probability of exciton dissociation compared to Cs-rich quantum dots. Surface ligand-induced strain enables full-range A-site tuning.

NATURE COMMUNICATIONS (2023)

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Article Physics, Applied

Effect of multi-interface patterns on the light-outcoupling of perovskite light-emitting diodes

Zong-Tao Li et al.

Summary: Patterned structures in PeLEDs, such as the SiO2-microcolumn pattern, can reduce optical loss and improve the external quantum efficiency. The increase in the number of patterned interfaces contributes to a decrease in optical loss, thanks to the scattering effect and the utilization of waveguide and surface plasmon polariton modes. A PeLED with a five-interface structure based on an SMP substrate demonstrated improved light outcoupling, suggesting a synergistic design for efficient devices with multi-interface patterns.

APPLIED PHYSICS LETTERS (2023)

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Review Chemistry, Physical

Passivation strategies for mitigating defect challenges in halide perovskite light-emitting diodes

Xinyu Shen et al.

Summary: Despite the well-established defect tolerance of metal halide perovskites (MHPs), various sources of defects in MHPs, such as grain boundaries, colloidal nanocrystal surfaces, and heterointerfaces with charge-transport layers, significantly affect the efficiency and stability of LEDs. Defect passivation strategies are essential for improving device performance.

JOULE (2023)

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Article Chemistry, Multidisciplinary

A Universal Ternary-Solvent-Ink Strategy toward Efficient Inkjet-Printed Perovskite Quantum Dot Light-Emitting Diodes

Changting Wei et al.

Summary: A universal ternary-solvent-ink strategy is proposed for the preparation of high-quality and stable quantum dot inks, leading to efficient inkjet-printed quantum dot light-emitting diodes. The strategy demonstrates a significant improvement in performance compared to traditional binary solvent systems.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Phosphonate/Phosphine Oxide Dyad Additive for Efficient Perovskite Light-Emitting Diodes

Chenyang Zhao et al.

Summary: A novel phosphonate/phosphine oxide dyad molecular additive (PE-TPPO) is reported to enhance the device efficiency of metal-halide perovskite LEDs. The additive possesses unique dual roles of defect passivation and carrier radiative recombination enhancement. By modifying the defects and increasing local carrier concentration, this additive significantly improves the photoluminescence intensity and homogeneity of the perovskite film. The resulting green PeLEDs exhibit state-of-the-art efficiencies in terms of external quantum efficiency, current efficiency, and power efficiency.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Physics, Applied

Improved hole injection for CsPbI3 nanocrystals based light-emitting diodes via coevaporation of hole transport layer

Feisong Qin et al.

Summary: By doping high-hole-mobility TCTA into CsPbI3 nanocrystals-based light-emitting diodes, the carrier transport was balanced and device performances were improved.

APPLIED PHYSICS LETTERS (2022)

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Article Chemistry, Multidisciplinary

Wide-Bandgap Perovskite Quantum Dots in Perovskite Matrix for Sky-Blue Light-Emitting Diodes

Yuan Liu et al.

Summary: This study developed a novel CsPbBr3 QD-in-perovskite matrix solid that exhibited high luminescent efficiency and spectral stability. The modulation of perovskite E-g and the passivation of the material were achieved through alloying and specific coordination, leading to enhanced air- and photo-stability.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Nanoscience & Nanotechnology

Excitonic versus Free-Carrier Contributions to the Nonlinearly Excited Photoluminescence in CsPbBr3 Perovskites

Daria Khmelevskaia et al.

Summary: This study investigates the influence of the order of nonlinearity in halide perovskites on the performance of light conversion processes. The results reveal a strong dependence of the nonlinearity order on temperature, excitation wavelength, thickness, and size.

ACS PHOTONICS (2022)

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Article Chemistry, Multidisciplinary

Lead-free Double Perovskite Cs2AgIn0.9Bi0.1Cl6 Quantum Dots for White Light-Emitting Diodes

Yuqing Zhang et al.

Summary: A novel lead-free double perovskite quantum dots were successfully fabricated for white light-emitting diodes with excellent optoelectronic performance and stability. The device exhibits good luminous properties and stability, making it suitable for future lighting applications.

ADVANCED SCIENCE (2022)

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Article Nanoscience & Nanotechnology

Passivation Layer of Potassium Iodide Yielding High Efficiency and Stable Deep Red Perovskite Light-Emitting Diodes

Cheng Chen et al.

Summary: This study proposes improving the optical properties of CsPbI3:Sr emissive layer (EML) in perovskite light-emitting diodes (PeLEDs) by inserting an additional potassium iodide (KI) passivation layer. The results demonstrate that the use of a KI layer can lead to high-performance PeLEDs with higher quantum efficiency and longer lifetime.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Nanoscience & Nanotechnology

High-Efficiency Semitransparent Light-Emitting Diodes with Perovskite Nanocrystals

Qun Wan et al.

Summary: In the field of translucent displays, using an alkali metal/inert metal bilayer metal electrode and perovskite nanocrystals as an emitter layer allows for the fabrication of high-efficiency, high-color-purity, and high-brightness semitransparent LEDs, with great potential for applications.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Multidisciplinary

In Situ Inorganic Ligand Replenishment Enables Bandgap Stability in Mixed-Halide Perovskite Quantum Dot Solids

Ya-Kun Wang et al.

Summary: The issue of instability in mixed-halide perovskites (MHPs) has been addressed by introducing inorganic ligands, resulting in improved colloidal and photo-stability. The new materials exhibit high efficiency and narrow emission spectrum in light-emitting diodes (LEDs), with enhanced operating stability.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Enantiomorphic Single Crystals of Linear Lead(II) Bromide Perovskitoids with White Circularly Polarized Emission

Kai-Hang Jin et al.

Summary: This article reports a new class of chiroptical hybrid organic-inorganic perovskites with mirror optical signal responses and discovers materials with white circularly polarized emission. These materials have extensively and easily tunable photophysical properties, offering potential applications in the field of chirality.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Engineering, Environmental

ZnBr2 mediated transformation from nonluminescent Cs4PbBr6 to green-emitting Zn-doped CsPbBr3/Cs4PbBr6 nanocrystals for electroluminescent light-emitting diodes

Siqi Sun et al.

Summary: This study successfully transformed nonluminescent Cs4PbBr6 nanocrystals into highly luminescent Zn-doped CsPbBr3/Cs4PbBr6 nanocrystals through an insertion reaction, resulting in improved photoluminescence quantum yield. These nanocrystals were used as emitters in LED devices, achieving high performance.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Multidisciplinary

Correlating Symmetries of Low-Frequency Vibrations and Self-Trapped Excitons in Layered Perovskites for Light Emission with Different Colors

Miao-Ling Lin et al.

Summary: The soft hybrid organic-inorganic structure of two-dimensional layered perovskites enables broadband emission at room temperature. The photophysics of these materials, including exciton self-trapping and phonon coupling, is studied. The directional symmetries of phonon modes are investigated using angle-resolved polarized Raman spectroscopy and correlated to the temperature-dependence of the emission, providing insights into the lattice deformations and recombination dynamics.

SMALL (2022)

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Article Multidisciplinary Sciences

Anisotropic nanocrystal superlattices overcoming intrinsic light outcoupling efficiency limit in perovskite quantum dot light-emitting diodes

Sudhir Kumar et al.

Summary: The authors demonstrated the control of transition-dipole-moment orientation in quantum dot solids using colloidal lead halide perovskite anisotropic nanocrystals, leading to an enhanced external quantum efficiency.

NATURE COMMUNICATIONS (2022)

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Article Optics

Suppressing thermal quenching via defect passivation for efficient quasi-2D perovskite light-emitting diodes

Dezhong Zhang et al.

Summary: Emission thermal quenching is a common issue in quasi-2D perovskite emitters and greatly reduces the luminescence efficiency of PeLEDs. In this study, a passivation strategy is developed to investigate and suppress the thermal quenching, revealing the important role of defects. The defect-passivated PeLEDs achieve improved external quantum efficiency and longer operation lifetime.

LIGHT-SCIENCE & APPLICATIONS (2022)

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Review Engineering, Electrical & Electronic

Perovskite light-emitting diodes

Azhar Fakharuddin et al.

Summary: Light-emitting diodes based on halide perovskites have achieved significant progress in recent years, with external quantum efficiencies surpassing 23%. However, their practical application is still limited due to factors such as low efficiency in blue-emitting devices, inability to access emission wavelengths above 800 nm, decreased external quantum efficiency at high current density, lack of understanding of the electric field's effect on mobile ions in perovskite materials, and short device lifetimes. This review explores the development of perovskite light-emitting diodes, examining the key challenges in creating efficient and stable devices.

NATURE ELECTRONICS (2022)

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Article Chemistry, Physical

Efficient Radiative Enhancement in Perovskite Light-Emitting Devices through Involving a Novel Sandwich Localized Surface Plasmon Structure

He Shao et al.

Summary: In recent years, CsPbX3 perovskite quantum dots have been considered as promising materials for LEDs. This study reports a strategy to improve the performance of perovskite QLEDs by utilizing the localized surface plasmon resonance effects of gold nanospheres. The strategy achieves significant improvement in photoluminescence quantum yield, luminance, and external quantum efficiency of the QLEDs.

SMALL METHODS (2022)

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Article Nanoscience & Nanotechnology

Ultrathin, transparent, flexible, and dual-side white light-responsive two-dimensional molybdenum disulfide quantum disk light-emitting diodes

Y-C Chien et al.

Summary: This study demonstrates a ultrathin, transparent, dual-side emitting and flexible light-responsive white LED based on a GIS structure. It achieves a high emission efficiency of around 9% and is based on a single emissive material with broadband emission property and low toxicity.

MATERIALS TODAY NANO (2022)

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Article Materials Science, Multidisciplinary

Recent progress of perovskite devices fabricated using thermal evaporation method: Perspective and outlook

S-R Bae et al.

Summary: Metal halide perovskites have gained significant attention in the semiconductor field due to their simple manufacturing process, high optoelectronic performance, and low cost. This review focuses on the spin-coating method and thermal evaporation method used to fabricate perovskite thin films, as well as the research progress on perovskite devices developed using thermal evaporation.

MATERIALS TODAY ADVANCES (2022)

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Article Multidisciplinary Sciences

Ultra-bright, efficient and stable perovskite light-emitting diodes

Joo Sung Kim et al.

Summary: This study reports the development of ultra-bright, efficient, and stable light-emitting diodes (PeLEDs) made of core/shell perovskite nanocrystals. The nanocrystals, obtained through in situ reaction of benzylphosphonic acid with polycrystalline perovskite films, demonstrate strong carrier confinement and maintain good charge-transport properties.

NATURE (2022)

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Article Multidisciplinary Sciences

Synthesis-on-substrate of quantum dot solids

Yuanzhi Jiang et al.

Summary: This study reports a new method to directly synthesize suitably coupled, monodispersed, ultrasmall perovskite quantum dot films on a substrate. By developing ligand structures with specific head and tail groups, control over the quantum dots' size, monodispersity, and coupling is achieved. The resulting blue PeLEDs exhibit high external quantum efficiency.

NATURE (2022)

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Article Chemistry, Multidisciplinary

High-Efficiency Blue Perovskite Light-Emitting Diodes with Improved Photoluminescence Quantum Yield via Reducing Trap-Induced Recombination and Exciton-Exciton Annihilation

Zhiqiang Guan et al.

Summary: In this study, the PLQY and EQE of blue perovskite LEDs were improved by introducing CsAc and applying solvent annealing. Through these methods, non-radiative losses caused by trap-induced recombination and exciton-exciton annihilation were effectively suppressed.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Highly Efficient Red Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-Off Enabled by Manipulating Crystallization of Quasi-2D Perovskites

Dengliang Zhang et al.

Summary: Efficient red perovskite light-emitting diodes (PeLEDs) with high luminance and low efficiency roll-off are achieved by manipulating the crystallization kinetics of phenethylamine bromide (PEABr) incorporated CsPbI3.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Red Perovskite Light-Emitting Diodes with Efficiency Exceeding 25% Realized by Co-Spacer Cations

Ji Jiang et al.

Summary: Efficient red PeLEDs with high EQE and maximum brightness have been achieved by finely controlling the phase distribution of quasi-2D perovskite and passivation of defects in perovskite films.

ADVANCED MATERIALS (2022)

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Review Chemistry, Multidisciplinary

Stability of Perovskite Light-Emitting Diodes: Existing Issues and Mitigation Strategies Related to Both Material and Device Aspects

Lingmei Kong et al.

Summary: Metal halide perovskites exhibit excellent electronic and optical properties, making them attractive for low-cost, large-area processing in optoelectronics. However, achieving stability and spectral stability remains a challenge. This review explores the origins of instability in perovskite materials and strategies for improving stability, as well as methods to enhance operational stability in perovskite LEDs.

ADVANCED MATERIALS (2022)

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Article Chemistry, Physical

Suppressing Auger Recombination of Perovskite Quantum Dots for Efficient Pure- Blue-Light-Emitting Diodes

Chenghao Bi et al.

Summary: This study reports a design that achieves high efficiency and stability in pure-blue perovskite light-emitting diodes (PeLEDs) by suppressing Auger recombination through the use of inorganic ligands replacing organic ligands. The design allows for a much lower efficiency roll-off and maintains high efficiency even at high luminance, which is of considerable significance for display applications.

ACS ENERGY LETTERS (2022)

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Article Multidisciplinary Sciences

Spectra stable deep-blue light-emitting diodes based on cryolite-like cerium(III) halides with nanosecond d-f emission

Qingxun Guo et al.

Summary: This article introduces a Cs3CeBrxI6-x material with stable and tunable color coordinates, and achieves efficient and spectrally stable deep blue emission through the construction of rare-earth LEDs.

SCIENCE ADVANCES (2022)

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Article Optics

Ultrastable near-infrared perovskite light-emitting diodes

Bingbing Guo et al.

Summary: This study demonstrates ultrastable and efficient perovskite light-emitting diodes for near-infrared light source. The introduction of a dipolar molecular stabilizer enhances the stability by preventing phase transformation and decomposition of the perovskite.

NATURE PHOTONICS (2022)

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Article Energy & Fuels

Carrier control in Sn-Pb perovskites via 2D cation engineering for all-perovskite tandem solar cells with improved efficiency and stability

Jinhui Tong et al.

Summary: This study demonstrates that the addition of mixed bulky organic cations can improve the structural and optoelectronic properties of Sn-Pb perovskite thin films, resulting in high-efficiency single-junction and all-perovskite tandem solar cells with improved stability.

NATURE ENERGY (2022)

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Review Nanoscience & Nanotechnology

A roadmap for the commercialization of perovskite light emitters

Tae-Hee Han et al.

Summary: Metal halide perovskites show promise as candidates for next-generation high-colour-purity displays and lighting applications, but their industrial applications are hindered by technical bottlenecks. This Review surveys the current status of MHP emitters and PeLEDs and provides a roadmap for their successful entry into the market, highlighting the goals and requirements. Future research steps for MHPs and their device applications are also outlined.

NATURE REVIEWS MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Overcoming the Outcoupling Limit of Perovskite Light-Emitting Diodes with Artificially Formed Nanostructures

Wenjing Chen et al.

Summary: The external quantum efficiency of planar-structure perovskite light-emitting diodes (PeLEDs) can be enhanced by forming textured perovskite films. By manipulating the dwell time of antisolvents, the film surface roughness and haze can be controlled, resulting in increased light outcoupling and boosted EQE.

ADVANCED MATERIALS (2022)

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Article Chemistry, Physical

Bifunctional Molecule Enables High-Quality CsPb(Br/CI)3 Nanocrystals for Efficient and Stable Pure-Blue Perovskite Light-Emitting Diodes

Siqi Sun et al.

Summary: In this study, high-quality CsPb(Br/Cl)3 PeNCs were synthesized using a bifunctional molecule, which exhibited high photoluminescence efficiency and spectral stability, making it suitable for blue light-emitting diode fabrication.

ACS ENERGY LETTERS (2022)

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Article Materials Science, Multidisciplinary

Spectrally stable and efficient pure-blue light-emitting diodes based on CsPb(Br/Cl)3 nanocrystals with surface passivation by organic sulfonate

Siqi Sun et al.

Summary: This study reports a convenient method for synthesizing high-quality pure-blue emitting CsPb(Br/Cl)3 NCs by introducing an organic sulfonate as an efficient surface passivator, achieving a high PLQY of 85% and enhanced conductivity. Based on these optimized nanocrystals, a pure-blue emitting LED with high external quantum efficiency and brightness is developed. The device exhibits excellent spectral and operational stability under voltage bias, attributed to efficient defect passivation.

MATERIALS TODAY PHYSICS (2022)

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Article Materials Science, Multidisciplinary

Tailoring the 2D/3D Phase Segregation for Highly Efficient Si-Based Perovskite Light-Emitting Diodes

Minxing Yan et al.

Summary: Si-based perovskite light-emitting diodes (PeLEDs) with enhanced light extraction ratio and improved photoluminescence quantum yield (PLQY) were achieved through fine-tuning the thicknesses of the functional layers and regulating the crystallization process with an additive. The optimized devices showed a record EQE over 20% and intense radiant exitance.

ACS MATERIALS LETTERS (2022)

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Article Chemistry, Multidisciplinary

A comparative study of the mechanical stability, electronic, optical and photocatalytic properties of CsPbX3 (X = Cl, Br, I) by DFT calculations for optoelectronic applications

M. Aktary et al.

Summary: The mechanical, electronic, optical, and photocatalytic properties of CsPbX3 (X = Cl, Br, I) were systematically studied using density functional theory. CsPbI3 exhibited the best photocatalytic performance for hydrogen evolution reaction, while CsPbBr3 showed the highest stability as a photocatalyst. CsPbCl3, CsPbBr3, and CsPbI3 were found to be suitable for different emissions in optical spectra for optoelectronic applications. CsPbBr3 performed well in terms of structural and elastic properties for device applications.

RSC ADVANCES (2022)

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Review Chemistry, Physical

Spacer Organic Cation Engineering for Quasi-2D Metal Halide Perovskites and the Optoelectronic Application

Ning Zhou et al.

Summary: Organic and inorganic halide perovskites are highly popular semiconductors due to their potential for optoelectronic applications. Quasi-2D perovskites offer improved stability and easier tuning of optoelectronic properties through structure engineering.

SMALL STRUCTURES (2022)

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Article Chemistry, Applied

A-site defects in LaSrMnO3 perovskite-based catalyst promoting NOx storage and reduction for lean-burn exhausts

Dongyue Zhao et al.

Summary: The study demonstrates that the A-site defective perovskite catalyst exhibits higher De-NOx performance and can be more efficiently regenerated as NOx storage sites at low temperatures.

JOURNAL OF RARE EARTHS (2021)

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Article Materials Science, Multidisciplinary

Photoinduced Phase Segregation in Mixed Halide Perovskites: Thermodynamic and Kinetic Aspects of Cl-Br Segregation

Junsang Cho et al.

Summary: The study investigates the segregation and dark recovery of halide ions in MAPb(Cl0.5Br0.5)(3) films, revealing that the presence of Cl stabilizes the mixed halide composition, leading to improved stability and efficiency of perovskite solar cells.

ADVANCED OPTICAL MATERIALS (2021)

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Article Multidisciplinary Sciences

Perovskite QLED with an external quantum efficiency of over 21% by modulating electronic transport

Tao Fang et al.

Summary: This study demonstrates green perovskite QLEDs with improved efficiency and operational lifetime by balancing charge injection, showing high color saturation and excellent external quantum efficiency. Modulating charge balance significantly enhances the operational lifetime of the devices, further highlighting the potential of perovskite QLEDs for practical applications.

SCIENCE BULLETIN (2021)

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Article Chemistry, Multidisciplinary

High-Speed Fabrication of All-Inkjet-Printed Organometallic Halide Perovskite Light-Emitting Diodes on Elastic Substrates

Junyi Zhao et al.

Summary: A method for manufacturing perovskite LEDs (PeLEDs) directly on an elastomer substrate using inkjet printing process is reported in this study, significantly reducing the fabrication time. The printed PeLEDs have a novel structure and exhibit excellent performance.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

High-Performance Blue Perovskite Light-Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi-2D Perovskite Layers

Zhenwei Ren et al.

Summary: By strategically introducing the bifunctional ligand ABA into quasi-2D perovskite films, this study enhances energy transfer between perovskite layers, promotes efficient electroluminescence, and reduces nonradiative recombination loss. The advanced properties of ABA-incorporated perovskites result in highly efficient and stable blue PeLEDs, making significant progress towards practical applications.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

High Color-Rendering Index and Stable White Light-Emitting Diodes by Assembling Two Broadband Emissive Self-Trapped Excitons

Zhuangzhuang Ma et al.

Summary: This study introduces a two-component strategy using two broadband emissive materials with self-trapped excitons (STEs) to produce high CRI and stable WLEDs. By synthesizing copper-based ternary halides composites, the research demonstrates cold/warm tunable WLEDs with high CRI and excellent stability. These results highlight the potential of using hybrids of STEs-derived broadband emissive materials for high-performance WLEDs.

ADVANCED MATERIALS (2021)

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Article Chemistry, Physical

Solution-Processed Efficient Perovskite Nanocrystal Light-Emitting Device Utilizing Doped Hole Transport Layer

Xinyu Shen et al.

Summary: The all-solution process for inorganic perovskite nanocrystals (PNCs) LEDs shows great potential for new-generation illumination and displays, but the challenge lies in the injection barriers and charge injection imbalance. The introduction of CBP into the hole transport layer (HTL) efficiently modulates the charge carrier mobility and energy level, resulting in barrier-free charge injection and optimal performance for solution-processed PNC LEDs. The luminance of red LEDs reaches 2990 cd m(-2) and the external quantum efficiency achieves 8.1%, with improved turn-on voltage and roll-off due to more balanced charge injection.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

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Article Optics

Comprehensive defect suppression in perovskite nanocrystals for high-efficiency light-emitting diodes

Young-Hoon Kim et al.

Summary: In this study, a one-dopant alloying strategy was employed to enhance electroluminescence efficiencies of metal halide perovskite nanocrystals (PNCs) by reducing defect formation and enhancing charge carrier confinement. Surface-stabilizing agents and bromide vacancy healing agents were utilized to decrease defect density and improve carrier confinement, resulting in significant enhancement in performance.

NATURE PHOTONICS (2021)

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Article Optics

Efficient and bright white light-emitting diodes based on single-layer heterophase halide perovskites

Jiawei Chen et al.

Summary: Halide perovskite LEDs are a new type of white light-emitting diode that utilizes efficient and low-cost lighting technologies, featuring a single broadband emissive layer without the need for phosphors. These LEDs operate with high peak luminance and external quantum efficiency, with potential for further improvements in the future through advancements in fabrication technology and mechanistic understanding.

NATURE PHOTONICS (2021)

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Article Multidisciplinary Sciences

Reducing the impact of Auger recombination in quasi-2D perovskite light-emitting diodes

Yuanzhi Jiang et al.

Summary: By reducing the exciton binding energy of materials and employing a polar molecule for treatment, the Auger recombination effect in perovskite materials has been successfully suppressed, leading to efficient PeLEDs devices with outstanding photoluminescence quantum yields. Additionally, a record luminance of 82,480 cd m(-2) was achieved due to the suppressed efficiency roll-off, making it one of the brightest visible PeLEDs to date.

NATURE COMMUNICATIONS (2021)

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Review Chemistry, Applied

Nickel oxide for inverted structure perovskite solar cells

Fei Ma et al.

Summary: Inverted perovskite solar cells (PSCs) have attracted great attention due to their potential for improving stability. The use of nickel oxide (NiOx) as a hole transporting layer has shown promising results in achieving efficient and stable device performance, with efficiencies over 20%. Further research is ongoing to address current challenges and improve the development of efficient and stable NiOx based PSCs.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Review Chemistry, Multidisciplinary

Lead-Free Halide Perovskites for Light Emission: Recent Advances and Perspectives

Xin Li et al.

Summary: Lead-based halide perovskites have excellent properties for light-emitting applications but face challenges due to the toxic element lead, highlighting the urgency in developing lead-free alternatives. Recent advances focus on the synthesis, properties, and applications of lead-free halide perovskite materials, particularly in the field of optoelectronics.

ADVANCED SCIENCE (2021)

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Article Chemistry, Physical

Utilization of Trapped Optical Modes for White Perovskite Light-Emitting Diodes with Efficiency over 12%

Ziming Chen et al.

Summary: The main challenges in the metal-halide-perovskite light-emitting diode (PeLED) field are low light extraction efficiency (LEE) and difficulty in achieving white emission. A high-performance white PeLED with enhanced LEE was successfully constructed by coupling a blue PeLED with a red perovskite nanocrystal (PeNC) down-converter through a multilayer semitransparent electrode. This approach not only improved LEE by over 50%, but also achieved a high external quantum efficiency and luminance, representing state-of-the-art results in the field.

JOULE (2021)

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Article Chemistry, Multidisciplinary

Directional Polarized Light Emission from Thin-Film Light-Emitting Diodes

Xiangyu Fu et al.

Summary: The study demonstrates highly directional and polarized light emission from LEDs by selectively diffracting the TE waveguide mode, showing potential for more efficient photonic applications.

ADVANCED MATERIALS (2021)

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Article Chemistry, Applied

Ultra-stable Eu3+-doped CsPbCl2Br1 perovskite quantum dots glass for optical temperature sensing

Yanxia Yu et al.

Summary: In this study, Eu3+-doped CsPbCl2Br1 glass with high sensitivity for optical temperature sensing was successfully synthesized. The fluorescence intensity ratio (FIR) was studied to show the high absolute and relative temperature sensitivity of the glass. The Eu3+-doped QDs glass also demonstrated good stability performance.

JOURNAL OF RARE EARTHS (2021)

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Article Chemistry, Multidisciplinary

High Color Purity and Efficient Green Light-Emitting Diode Using Perovskite Nanocrystals with the Size Overly Exceeding Bohr Exciton Diameter

Jun-Nan Yang et al.

Summary: This study presents a new type of PNCLED using large-size CsPbBr3 PNCs, which achieves ultra-narrow emission line width and rapid brightness rise. By utilizing unconventional materials and processing methods, detrimental effects caused by the quantum confinement effect in the device are avoided, realizing the highest color purity in green PNCLED.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Multidisciplinary Sciences

Distribution control enables efficient reduced-dimensional perovskite LEDs

Dongxin Ma et al.

Summary: By using a fluorinated triphenylphosphine oxide additive to control cation diffusion and passivate surfaces, the efficiency and operating lifetimes of perovskite light-emitting diodes have been improved. Although reduced-dimensional perovskites show promise in increasing stability and photoluminescence quantum yield, challenges such as lower EQEs and inferior color purities remain.

NATURE (2021)

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Article Multidisciplinary Sciences

Ligand-engineered bandgap stability in mixed-halide perovskite LEDs

Yasser Hassan et al.

Summary: By utilizing multidentate ligands to treat mixed-halide perovskite nanocrystals, efficient and color-stable red electroluminescence with a wavelength centered at 620 nanometers and an external quantum efficiency of 20.3% has been achieved. The key function of the ligand treatment is to 'clean' the nanocrystal surface by removing lead atoms, which suppresses the formation of iodine Frenkel defects and halide segregation. This work demonstrates the sensitivity of metal halide perovskites to surface properties and provides a pathway to control surface defect formation and migration, crucial for achieving bandgap stability for light emission and potentially impacting other optoelectronic applications.

NATURE (2021)

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Article Optics

Suppression of temperature quenching in perovskite nanocrystals for efficient and thermally stable light-emitting diodes

Mingming Liu et al.

Summary: Fluoride-treated CsPbBr3 nanocrystals exhibit near unity emission efficiency at temperatures up to 373 K, with constant decay kinetics. The treatment leads to surfaces rich in fluorine with wider energy gaps than the core, suppressing carrier trapping and improving thermal stability. Devices incorporating these nanocrystals show low turn-on voltage and high external quantum efficiency, with nearly 80% efficiency maintained at high temperatures, offering a promising pathway for high-performance light-emitting diodes based on perovskite nanostructures.

NATURE PHOTONICS (2021)

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Article Multidisciplinary Sciences

Phenylalkylammonium passivation enables perovskite light emitting diodes with record high-radiance operational lifetime: the chain length matters

Yuwei Guo et al.

Summary: Researchers investigate how the use of ammonium passivation molecules with different alkyl chain lengths can enhance device stability by suppressing iodide ion migration through steric hindrance and Coulomb interactions, thereby improving the performance of perovskite light emitting diodes.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Critical role of additive-induced molecular interaction on the operational stability of perovskite light-emitting diodes

Chaoyang Kuang et al.

Summary: This study demonstrates greatly improved operational stability of high-efficiency PeLEDs by incorporating dicarboxylic acids into the precursor for perovskite depositions. The stable amides formed through an in situ amidation process prevent detrimental reactions between the perovskites and the charge injection layer, ensuring excellent operational stability. By optimizing the amidation reaction in the perovskite emissive layers, efficient PeLEDs with a peak external quantum efficiency of 18.6% and a long half-life time of 682 h at 20 mA cm(-2) have been achieved, representing a significant breakthrough in PeLEDs.

JOULE (2021)

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Article Chemistry, Multidisciplinary

Engineering Band-Type Alignment in CsPbBr3 Perovskite-Based Artificial Multiple Quantum Wells

Kwang Jae Lee et al.

Summary: This study introduces artificial perovskite-based MQWs with different band offset alignments, showing the disparity in charge carrier dynamics between type-I and type-II MQWs through transient absorption spectroscopy. Photodiodes of different types of artificial MQWs exhibit different carrier behaviors and photoresponse characteristics, with type-II MQW photodiodes showing a more than tenfold increase in rectification ratio compared to bulk perovskite devices. These findings open new opportunities for producing halide-perovskite-based quantum devices through bandgap engineering.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Perovskite Light-Emitting Diodes with External Quantum Efficiency Exceeding 22% via Small-Molecule Passivation

Zema Chu et al.

Summary: The functional additive ethoxylated trimethylolpropane triacrylate (ETPTA) can effectively reduce defects in perovskite films, improving the performance of Perovskite light-emitting diodes (PeLEDs) to achieve high external quantum efficiency. These findings provide a simple and effective strategy for producing highly efficient perovskite polycrystalline films and their optoelectronics devices.

ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Defect Passivation in Lead-Halide Perovskite Nanocrystals and Thin Films: Toward Efficient LEDs and Solar cells

Junzhi Ye et al.

Summary: Lead-halide perovskites have emerged as leading candidates for next-generation LEDs and solar cells due to their high photoluminescence quantum yields. Defects at the surface and grain boundaries significantly impact charge-carrier transport and efficiency, necessitating the development of effective passivation strategies for performance improvement.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

All-Inorganic Quantum-Dot LEDs Based on a Phase-Stabilized α-CsPbI3 Perovskite

Ya-Kun Wang et al.

Summary: The all-inorganic nature of CsPbI3 perovskites enhances stability in perovskite devices. Inorganic ligand exchange leads to CsPbI3 QD films with superior phase stability and increased thermal transport. LEDs with KI-exchanged QD films exhibit increased thermal transport and higher operating stability compared to control devices.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Applied

Localized surface plasmon resonance of copper nanoparticles improves the performance of quasi-two-dimensional perovskite light-emitting diodes

Lu-Syuan Jhuang et al.

Summary: Plasmonic nanoparticles based on copper were synthesized and capped with polymer to enhance ambient stability, leading to improved efficiencies in perovskite light-emitting diodes. The luminous efficiency can be increased by up to 115%, attributed to the plasmonic effects of the copper nanoparticles. The cost-effective polymer-capped copper nanoparticles may drive demand for plasmonic nanostructures in commercial optoelectronic devices.

DYES AND PIGMENTS (2021)

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Article Multidisciplinary Sciences

Efficient light-emitting diodes based on oriented perovskite nanoplatelets

Jieyuan Cui et al.

Summary: Solution-processed planar perovskite light-emitting diodes (LEDs) offer high performance and cost-effective electroluminescent devices suitable for large-area display and lighting applications. LEDs utilizing perovskite nanoplatelets with a high ratio of horizontal transition dipole moments (TDMs) have demonstrated an enhanced light-outcoupling efficiency and achieved a peak EQE of 23.6%, making them highly efficient planar perovskite LEDs.

SCIENCE ADVANCES (2021)

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Article Multidisciplinary Sciences

Stable and Efficient Red Perovskite Light-Emitting Diodes Based on Ca2+-Doped CsPbI3 Nanocrystals

Wei Shen et al.

Summary: By doping Ca2+ in alpha-CsPbI3 nanocrystals, the stability and optoelectronic properties of the material have been significantly improved, demonstrating the potential of Ca2+ doping strategy in high-quality CsPbI3 NC LEDs.

RESEARCH (2021)

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Article Chemistry, Multidisciplinary

Low Roll-Off and High Stable Electroluminescence in Three-Dimensional FAPbI3 Perovskites with Bifunctional-Molecule Additives

Hao Zhang et al.

Summary: By introducing a specific additive, the defects and ion migration issues in 3D perovskite LED have been successfully suppressed, leading to high brightness and efficiency in the LED device.

NANO LETTERS (2021)

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Review Nanoscience & Nanotechnology

Quasi-2D lead halide perovskite gain materials toward electrical pumping laser

Chenyang Zhao et al.

Summary: Quasi two-dimensional lead halide perovskite materials exhibit excellent performance in photoelectric devices, with high exciton utilization and low threshold characteristics due to their structural flexibility and quantum-well structures. Additionally, the hydrophobic bulky organic cations contribute to improved stability.

NANOPHOTONICS (2021)

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Article Nanoscience & Nanotechnology

Excess Ion-Induced Efficiency Roll-Off in High-Efficiency Perovskite Light-Emitting Diodes

Yongheng Jia et al.

Summary: The mechanism behind EQE roll-off in high-efficiency PeLEDs was investigated, revealing that migration and segregation of excess iodide ions from nonstoichiometric precursors triggered imbalanced charge injection. A simple wash-off treatment with chloroform and an ultra-thin PMMA interlayer were introduced to effectively suppress the roll-off behavior, leading to the achievement of high-brightness PeLEDs with improved performance.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Interfacial Nucleation Seeding for Electroluminescent Manipulation in Blue Perovskite Light-Emitting Diodes

Yang Shen et al.

Summary: This study introduces a simple device architecture to achieve efficient blue PeLEDs by manipulating perovskite crystallization nucleation at interfaces, leading to highly compact perovskite nanocrystal assemblies. This strategy significantly improves the external quantum efficiency (EQE) of blue PeLEDs and enhances operational stability.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Efficient Blue Light Emitting Diodes Based On Europium Halide Perovskites

Jiajun Luo et al.

Summary: This study introduces a lead-free perovskite, CsEuBr3, which displays bright blue exciton emission at 448 nm with color coordinates of (0.15, 0.04) originating from specific transitions. It demonstrates high performance characteristics including short excited-state lifetime, excellent exciton diffusion diffusivity, and high quantum yield. This material is used to construct deep-blue PeLEDs with high efficiency and longevity, aiming to inspire further research in lanthanide-based perovskites for next-generation LED applications.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Nanosecond-Pulsed Perovskite Light-Emitting Diodes at High Current Density

Lianfeng Zhao et al.

Summary: This study presents high-speed PeLEDs, driven by nanosecond electrical pulses, with improved device design and material considerations. The fast operation of PeLEDs allows access to transient charge carrier dynamics and reveals new electroluminescence quenching pathways. Additionally, integrated DFB gratings enhance directional light emission and forward radiation output.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Promoting Energy Transfer via Manipulation of Crystallization Kinetics of Quasi-2D Perovskites for Efficient Green Light-Emitting Diodes

Zhenyu Guo et al.

Summary: By manipulating the crystallization kinetics of different-n phases, a more efficient energy transfer in Q-2D perovskites is achieved, leading to highly efficient green LEDs.

ADVANCED MATERIALS (2021)

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Article Engineering, Environmental

Ni2+-doped CsPbI3 perovskite nanocrystals with near-unity photoluminescence quantum yield and superior structure stability for red light-emitting devices

Menglong Liu et al.

Summary: The successful incorporation of Ni2+ ions into the CsPbI3 lattice leads to improved photoluminescence quantum yield and enhanced stability. The Ni2+-doped CsPbI3 nanocrystals can retain their red luminescence for up to 15 days and 7 months in atmosphere.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Physical

Tunable White Light-Emitting Devices Based on Unilaminar High-Efficiency Zn2+-Doped Blue CsPbBr3 Quantum Dots

Shuai Zhang et al.

Summary: This study successfully constructed perovskite-based white-light-emitting devices with a single layer of PQDs, allowing for the adjustment of cool and warm WLEDs.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

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Article Chemistry, Multidisciplinary

Bright and Stable Light-Emitting Diodes Based on Perovskite Quantum Dots in Perovskite Matrix

Yuan Liu et al.

Summary: This study introduces a new type of perovskite quantum dots that remain stable in a thin layer of precursor solution and utilize strained QDs as nucleation centers to drive homogeneous crystallization. These new materials show suppressed Auger bi-exciton recombination and bright luminescence under high excitation, leading to primary red LEDs with significantly enhanced performance compared to control materials.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Editorial Material Optics

Characterization of stability and challenges to improve lifetime in perovskite LEDs

Seung-Je Woo et al.

Summary: The low stability of perovskite light-emitting diodes (PeLEDs) poses the biggest challenge to the commercialization of PeLED displays. Analyzing and improving the stability of PeLEDs is crucial, and suggestions provided in this paper may enhance the operational lifetime of PeLEDs.

NATURE PHOTONICS (2021)

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Article Chemistry, Multidisciplinary

Water-Soluble Conjugated Polyelectrolyte Hole Transporting Layer for Efficient Sky-Blue Perovskite Light-Emitting Diodes

Yanliang Liu et al.

Summary: The use of a new water-soluble conjugated polyeletrolyte TB(MA) as a hole transporting layer showed improved compatibility between the charge transporting layer and perovskite film, leading to efficient sky-blue PeLEDs with high external quantum efficiency.

SMALL (2021)

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Article Multidisciplinary Sciences

Unveiling the additive-assisted oriented growth of perovskite crystallite for high performance light-emitting diodes

Lin Zhu et al.

Summary: Solution-processed metal halide perovskites with additives play a crucial role in passivating defects and influencing the crystallization process. By tracking chemical interactions and crystallographic evolution, suitable additives can be found to improve the quality of perovskite films and device performance.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Highly stable CsPbI3:Sr2+ nanocrystals with near-unity quantum yield enabling perovskite light-emitting diodes with an external quantum efficiency of 17.1%

Cheng Chen et al.

Summary: The Sr2+-doped CsPbI3 nanocrystals synthesized in this study exhibit enhanced stability and near-unity photoluminescence quantum yield (PLQY), maintaining high PLQY even after surface ligand removal by a polar solvent. Films prepared with a mixture of EA and octane show high PLQY and excellent stability, leading to red-emitting PeLEDs with a world-record peak external quantum efficiency (EQE) of 17.1%.

NANO ENERGY (2021)

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Article Chemistry, Physical

High-Brightness Perovskite Light-Emitting Diodes Based on FAPbBr3 Nanocrystals with Rationally Designed Aromatic Ligands

Haifeng Zhao et al.

Summary: The study successfully developed highly luminescent and stable perovskite nanocrystals capped with 2-naphthalenesulfonic acid, improving the brightness and efficiency of LEDs.

ACS ENERGY LETTERS (2021)

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Article Materials Science, Multidisciplinary

Eu2+ ions as an antioxidant additive for Sn-based perovskite light-emitting diodes

Xi Wang et al.

Summary: Doping Sn-based perovskite film with Eu2+ ions can improve the external quantum efficiency and brightness of LEDs, while reducing crystalline defect density.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Physical

Efficient all-inorganic perovskite light-emitting diodes enabled by manipulating the crystal orientation

Wenjing Feng et al.

Summary: By low-temperature annealing, crystal orientation along the (110) plane can be manipulated, leading to orderly packed crystals that increase surface coverage and reduce defect states, resulting in high-performance and stable PeLEDs.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Nanoscience & Nanotechnology

Quasi-2D lead halide perovskite gain materials toward electrical pumping laser

Chenyang Zhao et al.

Summary: Quasi two-dimensional lead halide perovskite materials exhibit excellent performance in photoelectric devices, with flexible structure and quantum-well structures for efficient energy transfer and high exciton utilization, benefiting the performance of perovskite LEDs and lasers. The characteristics of bulky organic cations contribute to improved stability, moisture tolerance, and defects passivation.

NANOPHOTONICS (2021)

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Article Nanoscience & Nanotechnology

Solution-processed, top-emitting, microcavity polymer light-emitting diodes for the pure red, green, blue and near white emission

Qixin Zhuang et al.

NANOTECHNOLOGY (2020)

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Article Chemistry, Physical

Electrically-Driven Violet Light-Emitting Devices Based on Highly Stable Lead-Free Perovskite Cs3Sb2Br9 Quantum Dots

Zhuangzhuang Ma et al.

ACS ENERGY LETTERS (2020)

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Article Nanoscience & Nanotechnology

Realizing 22.3% EQE and 7-Fold Lifetime Enhancement in QLEDs via Blending Polymer TFB and Cross-Linkable Small Molecules for a Solvent-Resistant Hole Transport Layer

Pengyu Tang et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Dual Passivation of Perovskite Defects for Light-Emitting Diodes with External Quantum Efficiency Exceeding 20%

Zhibin Fang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Low Roll-Off Perovskite Quantum Dot Light-Emitting Diodes Achieved by Augmenting Hole Mobility

Yu Wang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Based on Potassium Passivated Nanocrystals

Fei Yang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

High-Performance Perovskite Light-Emitting Diode with Enhanced Operational Stability Using Lithium Halide Passivation

Tian Wu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Physics, Applied

Highly efficient tandem blue phosphorescent organic LEDs with external quantum efficiency exceeding 42%

Ai Chen et al.

APPLIED PHYSICS EXPRESS (2020)

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Article Chemistry, Physical

Near-unity photoluminescence quantum yield in inorganic perovskite nanocrystals by metal-ion doping

Ghada H. Ahmed et al.

JOURNAL OF CHEMICAL PHYSICS (2020)

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Article Chemistry, Multidisciplinary

Potassium Bromide Surface Passivation on CsPbI3-xBrx Nanocrystals for Efficient and Stable Pure Red Perovskite Light-Emitting Diodes

Jun-Nan Yang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Optics

Large-area near-infrared perovskite light-emitting diodes

Xiaofei Zhao et al.

NATURE PHOTONICS (2020)

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Article Multidisciplinary Sciences

Edge stabilization in reduced-dimensional perovskites

Li Na Quan et al.

NATURE COMMUNICATIONS (2020)

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Article Chemistry, Physical

Chlorine Vacancy Passivation in Mixed Halide Perovskite Quantum Dots by Organic Pseudohalides Enables Efficient Rec. 2020 Blue Light-Emitting Diodes

Xiaopeng Zheng et al.

ACS ENERGY LETTERS (2020)

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Article Nanoscience & Nanotechnology

Boosting Efficiency and Curtailing the Efficiency Roll-Off in Green Perovskite Light-Emitting Diodes via Incorporating Ytterbium as Cathode Interface Layer

Muhammad Umair Ali et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Suppressing Efficiency Roll-Off at High Current Densities for Ultra-Bright Green Perovskite Light-Emitting Diodes

Chen Zou et al.

ACS NANO (2020)

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Article Chemistry, Multidisciplinary

Role of PCBM in the Suppression of Hysteresis in Perovskite Solar Cells

Yu Zhong et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Efficient Blue Perovskite Light-Emitting Diodes Boosted by 2D/3D Energy Cascade Channels

Fengjuan Zhang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Thermal Management Enables Bright and Stable Perovskite Light-Emitting Diodes

Lianfeng Zhao et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Stabilizing Perovskite Light-Emitting Diodes by Incorporation of Binary Alkali Cations

Nan Li et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Multidisciplinary

High Color Purity Lead‐Free Perovskite Light‐Emitting Diodes via Sn Stabilization

Hongyan Liang et al.

Advanced Science (2020)

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Article Nanoscience & Nanotechnology

Enhancing photoluminescence quantum efficiency of metal halide perovskites by examining luminescence-limiting factors

Hyun Myung Jang et al.

APL MATERIALS (2020)

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Article Chemistry, Physical

Silver-Bismuth Bilayer Anode for Perovskite Nanocrystal Light-Emitting Devices

Xinyu Shen et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Multidisciplinary Sciences

Regulating strain in perovskite thin films through charge-transport layers

Ding-Jiang Xue et al.

NATURE COMMUNICATIONS (2020)

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Letter Optics

Microcavity top-emission perovskite light-emitting diodes

Yanfeng Miao et al.

LIGHT-SCIENCE & APPLICATIONS (2020)

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Article Chemistry, Physical

Stabilizing the Electroluminescence of Halide Perovskites with Potassium Passivation

Anil Kanwat et al.

ACS ENERGY LETTERS (2020)

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Article Chemistry, Physical

Samarium-Doped Metal Halide Perovskite Nanocrystals for Single-Component Electroluminescent White Light-Emitting Diodes

Rui Sun et al.

ACS ENERGY LETTERS (2020)

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Article Chemistry, Multidisciplinary

Bright CsPbI3 Perovskite Quantum Dot Light-Emitting Diodes with Top-Emitting Structure and a Low Efficiency Roll-Off Realized by Applying Zirconium Acetylacetonate Surface Modification

Min Lu et al.

NANO LETTERS (2020)

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Article Nanoscience & Nanotechnology

Ion Migration-Induced Degradation and Efficiency Roll-off in Quasi-2D Perovskite Light-Emitting Diodes

Tai Cheng et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Revealing Factors Influencing the Operational Stability of Perovskite Light-Emitting Diodes

Jonathan H. Warby et al.

ACS NANO (2020)

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Review Chemistry, Multidisciplinary

Light Out-Coupling Management in Perovskite LEDs-What Can We Learn from the Past?

Qianpeng Zhang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Suppressing Ion Migration Enables Stable Perovskite Light-Emitting Diodes with All-Inorganic Strategy

Lin Zhang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Core/Shell Perovskite Nanocrystals: Synthesis of Highly Efficient and Environmentally Stable FAPbBr3/CsPbBr3 for LED Applications

Chengxi Zhang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Nanoscience & Nanotechnology

Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes

Congcong Gao et al.

ACS PHOTONICS (2020)

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Article Chemistry, Physical

Simultaneous Low-Order Phase Suppression and Defect Passivation for Efficient and Stable Blue Light-Emitting Diodes

Zhenwei Ren et al.

ACS ENERGY LETTERS (2020)

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Article Chemistry, Multidisciplinary

Rearranging Low-Dimensional Phase Distribution of Quasi-2D Perovskites for Efficient Sky-Blue Perovskite Light-Emitting Diodes

Peiyuan Pang et al.

ACS NANO (2020)

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Article Nanoscience & Nanotechnology

Bipolar-shell resurfacing for blue LEDs based on strongly confined perovskite quantum dots

Yitong Dong et al.

NATURE NANOTECHNOLOGY (2020)

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Review Chemistry, Multidisciplinary

Surface-Plasmon-Enhanced Perovskite Light-Emitting Diodes

Lianghui Gu et al.

SMALL (2020)

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Article Multidisciplinary Sciences

A bilateral interfacial passivation strategy promoting efficiency and stability of perovskite quantum dot light-emitting diodes

Leimeng Xu et al.

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Recombination Kinetics in Organic-Inorganic Perovskites: Excitons, Free Charge, and Subgap States

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Quantification of trap state densities in GaAs heterostructures grown at varying rates using intensity-dependent time resolved photoluminescence

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Effect of calcination temperature on structural properties and catalytic activity in oxidation reactions of LaNiO3 perovskite prepared by Pechini method

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Influence of Substituted Pyridine Rings on Physical Properties and Electron Mobilities of 2-Methylpyrimidine Skeleton-Based Electron Transporters

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Optical Properties of WO3/Ag/WO3 Multi layer As Transparent Cathode in Top-Emitting Organic Light Emitting Diodes

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Light extraction from organic light-emitting diodes enhanced by spontaneously formed buckles

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Enhanced light out-coupling of organic light-emitting devices using embedded low-index grids

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Ab initio investigation of hybrid organic-inorganic perovskites based on tin halides

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RGB tricolor produced by white-based top-emitting organic light-emitting diodes with microcavity structure

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Electron transport in naphthylamine-based organic compounds

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