High Performance Metal Halide Perovskite Light‐Emitting Diode: From Material Design to Device Optimization

Metal halide perovskites have drawn significant interest in the past decade. Superior optoelectronic properties, such as a narrow bandwidth, precise and facile tunable luminance over the entire visible spectrum, and high photoluminescence quantum yield of up to ≈100%, render metal halide perovskites...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2017-12, Vol.13 (45), p.n/a
Main Authors: Shan, Qingsong, Song, Jizhong, Zou, Yousheng, Li, Jianhai, Xu, Leimeng, Xue, Jie, Dong, Yuhui, Han, Boning, Chen, Jiawei, Zeng, Haibo
Format: Article
Language:English
Subjects:
Design optimization
efficiency
Energy conversion efficiency
Light emitting diodes
light‐emitting diode
Metal halides
Nanotechnology
Optoelectronics
Organic light emitting diodes
perovskite
Perovskites
Photoluminescence
Quantum efficiency
stability
Stability analysis
surface passivation
Visible spectrum
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Summary:Metal halide perovskites have drawn significant interest in the past decade. Superior optoelectronic properties, such as a narrow bandwidth, precise and facile tunable luminance over the entire visible spectrum, and high photoluminescence quantum yield of up to ≈100%, render metal halide perovskites suitable for next‐generation high‐definition displays and healthy lighting systems. The external quantum efficiency of perovskite light‐emitting diodes (LEDs) increases from 0.1 to 11.7% in three years; however, the energy conversion efficiency and the long‐term stability of perovskite LEDs are inadequate for practical application. Strategies to optimize the emitting layer and the device structure, with respect to material design, synthesis, surface passivation, and device optimization, are reviewed and highlighted. The long‐term stability of perovskite LEDs is evaluated as well. Meanwhile, several challenges and prospects for future development of perovskite materials and LEDs are identified. Fascinating metal halide perovskite nanomaterials are revolutionary to the field of displays and lighting. Strategies toward high performance perovskite light‐emitting diodes (LEDs) concerning the optimization of emitting materials and device structures are reviewed. The long‐term stability of perovskite LEDs are discussed as well. Challenges and prospects that are crucial for the development of perovskite materials and LEDs are identified.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201701770