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

Article Chemistry, Multidisciplinary

Bright and Stable Quantum Dot Light-Emitting Diodes

Taesoo Lee et al.

Summary: This study demonstrates bright and stable QLEDs on a Si substrate, achieving high brightness, efficiency, and stability through tailored interface and optimized device structure, pushing the development and application of QLEDs.

ADVANCED MATERIALS (2022)

Add to Collection

Article Chemistry, Multidisciplinary

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

Jian Qing et al.

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%.

ADVANCED MATERIALS (2021)

Add to Collection

Article Chemistry, Multidisciplinary

Polymerized Hybrid Perovskites with Enhanced Stability, Flexibility, and Lattice Rigidity

Wenjing Chen et al.

Summary: Polymerizing organometal halide perovskites with unsaturated 4-vinylbenzylammonium cations can enhance their stability, flexibility, and carrier mobility, while reducing non-radiative recombination rate. This approach results in improved optoelectronic properties, as demonstrated by the enhanced performance of 2D polymerized perovskite light-emitting diodes in terms of electroluminescence and external quantum efficiency. This work presents a new method for enhancing the intrinsic stability and performance of organometal halide perovskites.

ADVANCED MATERIALS (2021)

Add to Collection

Article Chemistry, Multidisciplinary

Ruddlesden-Popper-Phase Hybrid Halide Perovskite/Small-Molecule Organic Blend Memory Transistors

Murali Gedda et al.

Summary: Controlling the morphology of metal halide perovskite layers is crucial for optoelectronics manufacturing. A new strategy utilizing an organic semiconductor was proposed to promote the formation of large single-crystal domains in perovskite films, leading to transistors with unexpectedly large hysteresis windows. Material and device analysis, along with theoretical calculations, indicated a potential novel memory device concept for large-area electronics.

ADVANCED MATERIALS (2021)

Add to Collection

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)

Add to Collection

Article Multidisciplinary Sciences

Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes

Hanul Min et al.

Summary: By introducing an interlayer between the electron-transporting and perovskite layers in perovskite solar cells, researchers have successfully enhanced charge extraction and transport from the perovskite, leading to higher power conversion efficiency and fewer interfacial defects. The coherent interlayer allowed the fabrication of devices with a certified efficiency of 25.5%, which maintained about 90% of its initial efficiency even after continuous light exposure for 500 hours. The findings provide guidelines for designing defect-minimizing interfaces in metal halide perovskites and electron-transporting layers.

NATURE (2021)

Add to Collection

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)

Add to Collection

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)

Add to Collection

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)

Add to Collection

Article Chemistry, Multidisciplinary

Bottom-Up Quasi-Epitaxial Growth of Hybrid Perovskite from Solution Process-Achieving High-Efficiency Solar Cells via Template -Guided Crystallization

Hengkai Zhang et al.

Summary: A universal solution-processed bottom-up quasi-epitaxial growth method for highly oriented alpha-FAPbI(3) perovskite film is reported in this study. In situ GIWAXS was used to visualize the intermediate phase formation at the bottom of the film, serving as a guiding template for subsequent annealing process. The epitaxially grown BAFAMA perovskite film showed increased crystallinity and stability in solar cell applications.

ADVANCED MATERIALS (2021)

Add to Collection

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)

Add to Collection

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)

Add to Collection

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)

Add to Collection

Article Chemistry, Multidisciplinary

Unveiling Crystal Orientation in Quasi-2D Perovskite Films by In Situ GIWAXS for High-Performance Photovoltaics

Dong Liang et al.

Summary: GIWAXS was used to investigate the crystal orientation of quasi-2D perovskites during film fabrication process, revealing the impact of intermediate phases on crystalline growth and proposing a strategy of using simple additives to suppress their formation. This approach led to the successful fabrication of high-oriented quasi-2D perovskite solar cells with improved performance.

SMALL (2021)

Add to Collection

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)

Add to Collection

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)

Add to Collection

Article Energy & Fuels

Two-dimensional Ruddlesden-Popper layered perovskite solar cells based on phase-pure thin films

Chao Liang et al.

Summary: Introducing molten salt spacers can produce phase-pure quantum wells and enhance the performance of solar cells. Two-dimensional Ruddlesden-Popper layered metal-halide perovskites have better stability and optoelectronic properties compared to their three-dimensional counterparts.

NATURE ENERGY (2021)

Add to Collection

Article Chemistry, Multidisciplinary

Interfacial Electromechanics Predicts Phase Behavior of 2D Hybrid Halide Perovskites

Christopher C. Price et al.

ACS NANO (2020)

Add to Collection

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)

Add to Collection

Article Chemistry, Multidisciplinary

Co-Interlayer Engineering toward Efficient Green Quasi-Two-Dimensional Perovskite Light-Emitting Diodes

Meng Fanyuan et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

Add to Collection

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)

Add to Collection

Article Multidisciplinary Sciences

Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot

Hobeom Kim et al.

NATURE COMMUNICATIONS (2020)

Add to Collection

Article Multidisciplinary Sciences

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

Leimeng Xu et al.

NATURE COMMUNICATIONS (2020)

Add to Collection

Article Multidisciplinary Sciences

Large cation ethylammonium incorporated perovskite for efficient and spectra stable blue light-emitting diodes

Zema Chu et al.

NATURE COMMUNICATIONS (2020)

Add to Collection

Review Materials Science, Multidisciplinary

Perovskite Emitters as a Platform Material for Down-Conversion Applications

Hyeokjae Lee et al.

ADVANCED MATERIALS TECHNOLOGIES (2020)

Add to Collection

Article Engineering, Electrical & Electronic

Efficient light-emitting diodes from mixed-dimensional perovskites on a fluoride interface

Baodan Zhao et al.

NATURE ELECTRONICS (2020)

Add to Collection

Article Chemistry, Multidisciplinary

Enhanced Charge Transport in 2D Perovskites via Fluorination of Organic Cation

Fei Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Add to Collection

Article Multidisciplinary Sciences

Trifluoroacetate induced small-grained CsPbBr3 perovskite films result in efficient and stable light-emitting devices

Haoran Wang et al.

NATURE COMMUNICATIONS (2019)

Add to Collection

Article Multidisciplinary Sciences

Synthetic control over orientational degeneracy of spacer cations enhances solar cell efficiency in two-dimensional perovskites

Jun Hu et al.

NATURE COMMUNICATIONS (2019)

Add to Collection

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)

Add to Collection

Article Multidisciplinary Sciences

Maximizing and stabilizing luminescence from halide perovskites with potassium passivation

Mojtaba Abdi-Jalebi et al.

NATURE (2018)

Add to Collection

Article Chemistry, Physical

Electron-phonon interaction in efficient perovskite blue emitters

Xiwen Gong et al.

NATURE MATERIALS (2018)

Add to Collection

Article Multidisciplinary Sciences

Efficient green light-emitting diodes based on quasi-two-dimensional composition and phase engineered perovskite with surface passivation

Xiaolei Yang et al.

NATURE COMMUNICATIONS (2018)

Add to Collection

Article Optics

Anion-exchange red perovskite quantum dots with ammonium iodine salts for highly efficient light-emitting devices

Takayuki Chiba et al.

NATURE PHOTONICS (2018)

Add to Collection

Article Multidisciplinary Sciences

Perovskite light-emitting diodes based on spontaneously formed submicrometre-scale structures

Yu Cao et al.

NATURE (2018)

Add to Collection

Article Multidisciplinary Sciences

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

Kebin Lin et al.

NATURE (2018)

Add to Collection

Article Multidisciplinary Sciences

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

J. -C. Blancon et al.

SCIENCE (2017)

Add to Collection

Article Chemistry, Physical

Effects of Precursor Ratios and Annealing on Electronic Structure and Surface Composition of CH3NH3Pbl3 Perovskite Films

Haipeng Xie et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2016)

Add to Collection

Article Chemistry, Multidisciplinary

Efficient Visible Quasi-2D Perovskite Light-Emitting Diodes

Jinwoo Byun et al.

ADVANCED MATERIALS (2016)

Add to Collection

Article Chemistry, Physical

Ruddlesden-Popper Hybrid Lead Iodide Perovskite 2D Homologous Semiconductors

Constantinos C. Stoumpos et al.

CHEMISTRY OF MATERIALS (2016)

Add to Collection

Review Optics

Perovskite photonic sources

Brandon R. Sutherland et al.

NATURE PHOTONICS (2016)

Add to Collection

Article Optics

Perovskite light-emitting diodes based on solution-processed self-organized multiple quantum wells

Nana Wang et al.

NATURE PHOTONICS (2016)

Add to Collection

Article Multidisciplinary Sciences

Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes

Himchan Cho et al.

SCIENCE (2015)

Add to Collection

Article Chemistry, Physical

High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors

Felix Deschler et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2014)

Add to Collection

Article Nanoscience & Nanotechnology

Bright light-emitting diodes based on organometal halide perovskite

Zhi-Kuang Tan et al.

NATURE NANOTECHNOLOGY (2014)

Add to Collection

Article Multidisciplinary Sciences

Excitons versus free charges in organo-lead tri-halide perovskites

Valerio D'Innocenzo et al.

NATURE COMMUNICATIONS (2014)

Add to Collection

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

Related references

Export Citation

Share Paper