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Phase Regulation of Layered Perovskites toward High-Performance Light-Emitting Diodes

ADVANCED FUNCTIONAL MATERIALS (2023)

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Uncovering synergistic effect of chloride additives for efficient quasi-2D perovskite solar cells

Ze Wang et al.

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Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer

Shuai Yuan et al.

Summary: The research demonstrates that using fluorene-based pi-conjugated cationic polymer blended with perovskite semiconductors can achieve efficient blue LEDs with good electroluminescence and spectral stability. The mixed halide perovskite LEDs exhibit CIE coordinates of (0.08, 0.22) and (0.12, 0.13), showcasing great potential for stable blue perovskite LEDs.

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Spacer Cation Alloying in Ruddlesden-Popper Perovskites for Efficient Red Light-Emitting Diodes with Precisely Tunable Wavelengths

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Summary: A new method is employed in this study to achieve efficient red light-emitting diodes with tunable emission wavelengths in perovskite materials, reaching peak efficiencies of 11.5%.

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A Universal Approach for Controllable Synthesis of n-Specific Layered 2D Perovskite Nanoplates

Jin-Tai Lin et al.

Summary: Recent attention has been focused on 2D perovskites with tunable optical and electronic properties. By using kinetic control and adding carboxylic acid additives in the reaction, single-phase 2D perovskite nanoplates with a designated n number have been successfully synthesized, leading to enhanced photostability.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (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.

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Article Chemistry, Multidisciplinary

Spectral Stable Blue-Light-Emitting Diodes via Asymmetric Organic Diamine Based Dion-Jacobson Perovskites

Yuqiang Liu et al.

Summary: This study presents a new type of DJ phase CsPb(Br/Cl)(3) perovskite with asymmetric molecular configuration to improve the efficiency of blue PeLEDs and address the issue of spectral instability. By introducing asymmetric cations, stable photoluminescence spectra were achieved in perovskite films, enhancing the radiative recombination efficiency and achieving an external quantum efficiency of 2.65% in blue PeLEDs with stable spectra emission. This work provides a facile solution to the halide segregation issue in PeLEDs.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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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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Unraveling the Energy Landscape and Energy Funneling Modulated by Hole Transport Layer for Highly Efficient Perovskite LEDs

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Summary: This study investigates the effects of hole transport layer (HTL) on the energy landscape and energy funneling of quasi-2D perovskites, revealing significant variations in energy funneling efficiency among different HTLs. The passivation effect of PEO on the energy funneling process is studied, and the most efficient energy funneling is observed on PVK:PEO HTL. LEDs based on PEA(2)Cs(n-1)Pb(n)Br(3n+1) and PVK:PEO demonstrate the best performance reported so far without perovskite composition modifications.

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Smoothing the energy transfer pathway in quasi-2D perovskite films using methanesulfonate leads to highly efficient light-emitting devices

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Summary: By incorporating MeS additives to modify quasi-2D RP perovskite films, the structure is reconstructed, energy transfer is enhanced, and defect density is reduced, leading to improved light emission efficiency and device performance.

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Article Chemistry, Physical

Effective Phase Control for High-Performance Red-Light-Emitting Quasi-2D Perovskite Solar Cells via MACl Additive

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Summary: The use of MACl in perovskite films can effectively modulate phase distribution and crystal orientation, leading to dual-functional applications as both solar cells and LEDs with enhanced performance.

ACS APPLIED ENERGY MATERIALS (2021)

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Article Multidisciplinary Sciences

High-performance large-area quasi-2D perovskite light-emitting diodes

Changjiu Sun et al.

Summary: The performance of perovskite light-emitting diodes tends to decline as the active area increases, with severe phase-segregation identified as the cause. The introduction of L-Norvaline to construct an intermediate phase has successfully suppressed the phase-segregation, resulting in highly-efficient large-area quasi-2D films.

NATURE COMMUNICATIONS (2021)

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Article Nanoscience & Nanotechnology

Crystal Orientation Modulation and Defect Passivation for Efficient and Stable Methylammonium-Free Dion-Jacobson Quasi-2D Perovskite Solar Cells

Pengyu Su et al.

Summary: In this study, a multifunctional additive strategy was proposed by incorporating CDTA molecules into the perovskite precursor solution to prepare high-quality MA-free DJ quasi-2D perovskite films. The CDTA modification resulted in improved power conversion efficiency and stability in the device.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Emission Wavelength Tuning via Competing Lattice Expansion and Octahedral Tilting for Efficient Red Perovskite Light-Emitting Diodes

Guanwei Sun et al.

Summary: The electronic structure of lead halide perovskites can be tuned through the composition and structure of the BX6 octahedron, affecting emission wavelength and photoluminescence properties. The addition of large A-site cations can lead to lattice expansion or octahedral tilting, resulting in spectral redshift or blueshift of emission peak for wavelength tuning. Excess cations can also passivate the perovskites, leading to improved quantum yield, PL lifetime, and recombination ratio, ultimately achieving a high-efficiency red perovskite light-emitting diode.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Highly Efficient Pure-Blue Light-Emitting Diodes Based on Rubidium and Chlorine Alloyed Metal Halide Perovskite

Yang Yang et al.

Summary: Pure-blue PeLEDs with an emission peak at 475 nm, peak external quantum efficiency of 10.1%, and maximum luminance of 14 000 cd m(-2) were achieved by tailoring the compositions of perovskites, including simultaneous addition of rubidium and chlorine ions and incorporation of phenylethylammonium chloride to form quasi-2D hybrid perovskites. Alloying played a critical role in achieving better morphology with suppressed current leakage and enhanced light outcoupling.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Perovskite Light-Emitting Diodes with EQE Exceeding 28% through a Synergetic Dual-Additive Strategy for Defect Passivation and Nanostructure Regulation

Zhe Liu et al.

Summary: A synergetic dual-additive strategy was used to prepare perovskite films with low defect density and high environmental stability, leading to the formation of perovskite nanocrystals with a quasi-core/shell structure that exhibited improved stability and efficiency in green PeLEDs.

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

Modulating low-dimensional domains of self-assembling quasi-2D perovskites for efficient and spectra-stable blue light-emitting diodes

Yu Tian et al.

Summary: Efficient blue-emission PeLEDs with stable emission have been achieved by a self-assembling strategy, paving the way for constructing efficient, endurable, spectra-stable perovskite emitters for the next-generation display and lighting technologies.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Physical

Highly Efficient Sky-Blue Perovskite Light-Emitting Diode Via Suppressing Nonradiative Energy Loss

Zhaohua Zhu et al.

Summary: This study presents a highly efficient sky-blue PeLED based on a quasi-two-dimensional structure with an external quantum efficiency of 13.8%. The high efficiency is achieved by suppressing both triplet and trap-assisted nonradiative energy loss using a ligand with high-triplet-energy and dual-functional passivation groups, proposing a universal strategy to improve the efficiency of sky-blue PeLEDs.

CHEMISTRY OF MATERIALS (2021)

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Article Chemistry, Physical

Pure Red Light-Emitting Diodes Based on Quantum Confined Quasi-Two-Dimensional Perovskites with Cospacer Cations

Lvpeng Yang et al.

Summary: This study successfully fabricates efficient and spectrally stable pure-red PeLEDs based on quasi-2D perovskites by controlling the ratio of PEA and NMA cospacer, achieving a pure-red electroluminescence with high external quantum efficiency and maximum brightness.

ACS ENERGY LETTERS (2021)

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Article Materials Science, Multidisciplinary

Halide-modulated self-assembly of metal-free perovskite single crystals for bio-friendly X-ray detection

Qingyue Cui et al.

MATTER (2021)

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Article Materials Science, Multidisciplinary

A sandwich-like structural model revealed for quasi-2D perovskite films†

Fei Zheng et al.

Summary: A new sandwich-like structural model is proposed to describe the phase distribution of RPPs, offering valuable insights for improving the performance of 2D PSCs.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Multiple-Quantum-Well Perovskites for High-Performance Light-Emitting Diodes

Lu Cheng et al.

ADVANCED MATERIALS (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 Multidisciplinary Sciences

Long-range exciton transport and slow annihilation in two-dimensional hybrid perovskites

Shibin Deng et al.

NATURE COMMUNICATIONS (2020)

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Article Multidisciplinary Sciences

Structural and spectral dynamics of single-crystalline Ruddlesden-Popper phase halide perovskite blue light-emitting diodes

Hong Chen et al.

SCIENCE ADVANCES (2020)

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Article Materials Science, Multidisciplinary

Mixed Spacer Cation Stabilization of Blue-Emitting n=2 Ruddlesden-Popper Organic-Inorganic Halide Perovskite Films

Tik Lun Leung et al.

ADVANCED OPTICAL MATERIALS (2020)

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Article Multidisciplinary Sciences

Reduced-dimensional perovskite photovoltaics with homogeneous energy landscape

Tingwei He et al.

NATURE COMMUNICATIONS (2020)

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Review Chemistry, Multidisciplinary

High-Efficiency Perovskite Solar Cells

Jin Young Kim et al.

CHEMICAL REVIEWS (2020)

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Article Nanoscience & Nanotechnology

Significance of Ambient Temperature Control for Highly Reproducible Layered Perovskite Light-Emitting Diodes

Yaeeun Han 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 Chemistry, Physical

Tailoring the Surface Morphology and Phase Distribution for Efficient Perovskite Electroluminescence

Xuanchi Yu et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Chemistry, Physical

Design of 2D Templating Molecules for Mixed-Dimensional Perovskite Light-Emitting Diodes

Yan Fong Ng et al.

CHEMISTRY OF MATERIALS (2020)

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Article Chemistry, Physical

Phase Modulation by Vacuum Poling toward Enhanced Performance of Quasi-Two-Dimensional Bromide Perovskite-Based Light-Emitting Diodes

Zhe Liu et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Multidisciplinary Sciences

Dimension control of in situ fabricated CsPbClBr2 nanocrystal films toward efficient blue light-emitting diodes

Chenhui Wang et al.

NATURE COMMUNICATIONS (2020)

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Review Engineering, Electrical & Electronic

Recent Advancements in Near-Infrared Perovskite Light-Emitting Diodes

Parth Vashishtha et al.

ACS APPLIED ELECTRONIC MATERIALS (2020)

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Review Materials Science, Multidisciplinary

Quasi-2D perovskite emitters: a boon for efficient blue light-emitting diodes

Gundam Sandeep Kumar et al.

JOURNAL OF MATERIALS CHEMISTRY C (2020)

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Article Multidisciplinary Sciences

Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites

Chuanzhao Li et al.

NATURE COMMUNICATIONS (2020)

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Article Materials Science, Multidisciplinary

Phase control for quasi-2D blue emitters by spacer cation engineering

Ho Won Tam et al.

JOURNAL OF MATERIALS CHEMISTRY C (2020)

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Article Materials Science, Multidisciplinary

Mixed-ligand engineering of quasi-2D perovskites for efficient sky-blue light-emitting diodes

Siyuan Zeng et al.

JOURNAL OF MATERIALS CHEMISTRY C (2020)

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Article Multidisciplinary Sciences

Tailoring vertical phase distribution of quasi-two-dimensional perovskite films via surface modification of hole-transporting layer

Tiefeng Liu et al.

NATURE COMMUNICATIONS (2019)

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Article Nanoscience & Nanotechnology

High-Efficiency Red Light-Emitting Diodes Based on Multiple Quantum Wells of Phenylbutylammonium-Cesium Lead Iodide Perovskites

Zhuofei He et al.

ACS PHOTONICS (2019)

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Article Chemistry, Physical

Effects of Organic Cations on the Structure and Performance of Quasi-Two-Dimensional Perovskite-Based Light-Emitting Diodes

Xiaolei Yang et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2019)

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Article Chemistry, Physical

Suppressed Ion Migration in Reduced-Dimensional Perovskites Improves Operating Stability

Ziru Huang et al.

ACS ENERGY LETTERS (2019)

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Article Chemistry, Multidisciplinary

Optimization of Low-Dimensional Components of Quasi-2D Perovskite Films for Deep-Blue Light-Emitting Diodes

Shuai Yuan et al.

ADVANCED MATERIALS (2019)

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Article Chemistry, Physical

High Efficiency Blue and Green Light-Emitting Diodes Using Ruddlesden-Popper Inorganic Mixed Halide Perovskites with Butylammonium Interlayers

Parth Vashishtha et al.

CHEMISTRY OF MATERIALS (2019)

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Article Multidisciplinary Sciences

Structural and thermodynamic limits of layer thickness in 2D halide perovskites

Chan Myae Myae Soe et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2019)

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Article Nanoscience & Nanotechnology

Efficient and Color-Tunable Quasi-2D CsPbBrxCl3-x Perovskite Blue Light-Emitting Diodes

Kun-Hua Wang et al.

ACS PHOTONICS (2019)

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Review Chemistry, Multidisciplinary

Imperfections and their passivation in halide perovskite solar cells

Bo Chen et al.

CHEMICAL SOCIETY REVIEWS (2019)

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Review Chemistry, Multidisciplinary

Blue perovskite light-emitting diodes: progress, challenges and future directions

Naresh Kumar Kumawat et al.

NANOSCALE (2019)

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Article Materials Science, Multidisciplinary

Blue perovskite light-emitting diodes based on RbX-doped polycrystalline CsPbBr3 perovskite films

Hailong Wang et al.

JOURNAL OF MATERIALS CHEMISTRY C (2019)

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Article Chemistry, Multidisciplinary

Highly Efficient Spectrally Stable Red Perovskite Light-Emitting Diodes

Yu Tian et al.

ADVANCED MATERIALS (2018)

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Article Chemistry, Physical

Unraveling the Growth of Hierarchical Quasi-2D/3D Perovskite and Carrier Dynamics

Liang Li et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2018)

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Article Multidisciplinary Sciences

Design principles for electronic charge transport in solution-processed vertically stacked 2D perovskite quantum wells

Hsinhan Tsai et al.

NATURE COMMUNICATIONS (2018)

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Article Multidisciplinary Sciences

Origin of vertical orientation in two-dimensional metal halide perovskites and its effect on photovoltaic performance

Alexander Z. Chen et al.

NATURE COMMUNICATIONS (2018)

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Article Chemistry, Multidisciplinary

Two-Dimensional Organic-Inorganic Hybrid Perovskites: A New Platform for Optoelectronic Applications

Jun Hu et al.

ADVANCED MATERIALS (2018)

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Article Multidisciplinary Sciences

Color-stable highly luminescent sky-blue perovskite light-emitting diodes

Jun Xing et al.

NATURE COMMUNICATIONS (2018)

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Article Multidisciplinary Sciences

Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent

Kebin Lin et al.

NATURE (2018)

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Article Chemistry, Multidisciplinary

A Direct Bandgap Copper-Antimony Halide Perovskite

Brenda Vargas et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

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Article Chemistry, Multidisciplinary

Tailoring the Energy Landscape in Quasi-2D Halide Perovskites Enables Efficient Green-Light Emission

Li Na Quan et al.

NANO LETTERS (2017)

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Article Multidisciplinary Sciences

PEROVSKITE PHYSICS Extremely efficient internal exciton dissociation through edge states in layered 2D perovskites

J. -C. Blancon et al.

SCIENCE (2017)

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Article Chemistry, Physical

Suppressed Ion Migration in Low-Dimensional Perovskites

Yun Lin et al.

ACS ENERGY LETTERS (2017)

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Article Chemistry, Physical

The Role of Surface Tension in the Crystallization of Metal Halide Perovskites

Ayan A. Zhumekenov et al.

ACS ENERGY LETTERS (2017)

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Article Chemistry, Multidisciplinary

Sky-blue perovskite light-emitting diodes based on quasi-two-dimensional layered perovskites

Lu Cheng et al.

CHINESE CHEMICAL LETTERS (2017)

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Article Chemistry, Multidisciplinary

Slow-Photon-Effect-Induced Photoelectrical-Conversion Efficiency Enhancement for Carbon-Quantum-Dot-Sensitized Inorganic CsPbBr3 Inverse Opal Perovskite Solar

Shujie Zhou et al.

ADVANCED MATERIALS (2017)

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Article Nanoscience & Nanotechnology

Efficient Sky-Blue Perovskite Light-Emitting Devices Based on Ethylammonium Bromide Induced Layered Perovskites

Q. Wang et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Article Chemistry, Multidisciplinary

Efficient Blue Electroluminescence Using Quantum-Confined Two-Dimensional Perovskites

Sudhir Kumar et al.

ACS NANO (2016)

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Review Chemistry, Multidisciplinary

Advances and Promises of Layered Halide Hybrid Perovskite Semiconductors

Laurent Pedesseau et al.

ACS NANO (2016)

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Article Chemistry, Multidisciplinary

Efficient Visible Quasi-2D Perovskite Light-Emitting Diodes

Jinwoo Byun et al.

ADVANCED MATERIALS (2016)

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Article Chemistry, Multidisciplinary

Highly Efficient Perovskite Nanocrystal Light-Emitting Diodes Enabled by a Universal Crosslinking Method

Guangru Li et al.

ADVANCED MATERIALS (2016)

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Review Chemistry, Multidisciplinary

Organic-Inorganic Perovskites: Structural Versatility for Functional Materials Design

Bayrammurad Saparov et al.

CHEMICAL REVIEWS (2016)

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Article Chemistry, Multidisciplinary

Ligand-Stabilized Reduced-Dimensionality Perovskites

Li Na Quan et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016)

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Article Chemistry, Multidisciplinary

Observation of Quantum Confinement in Monodisperse Methylammonium Lead Halide Perovskite Nanocrystals Embedded in Mesoporous Silica

Victor Malgras et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016)

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Article Multidisciplinary Sciences

High-efficiency two-dimensional Ruddlesden-Popper perovskite solar cells

Hsinhan Tsai et al.

NATURE (2016)

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Article Nanoscience & Nanotechnology

Perovskite energy funnels for efficient light-emitting diodes

Mingjian Yuan et al.

NATURE NANOTECHNOLOGY (2016)

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Article Chemistry, Physical

Defect Tolerance in Methylammonium Lead Triiodide Perovskite

K. Xerxes Steirer et al.

ACS ENERGY LETTERS (2016)

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Article Energy & Fuels

Metal halide perovskites for energy applications

Wei Zhang et al.

NATURE ENERGY (2016)

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Article Chemistry, Multidisciplinary

2D Homologous Perovskites as Light-Absorbing Materials for Solar Cell Applications

Duyen H. Cao et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2015)

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Article Chemistry, Multidisciplinary

A Layered Hybrid Perovskite Solar-Cell Absorber with Enhanced Moisture Stability

Ian C. Smith et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2014)

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Article Nanoscience & Nanotechnology

Bright light-emitting diodes based on organometal halide perovskite

Zhi-Kuang Tan et al.

NATURE NANOTECHNOLOGY (2014)

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Article Optics

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

Won Hoe Koo et al.

NATURE PHOTONICS (2010)

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Article Physics, Applied

Enhanced light outcoupling in a thin film by texturing meshed surfaces

Yu-Hung Cheng et al.

APPLIED PHYSICS LETTERS (2007)

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Article Multidisciplinary Sciences

Electric field effect in atomically thin carbon films

KS Novoselov et al.

SCIENCE (2004)

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