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Stretchable Organometal‐Halide‐Perovskite Quantum‐Dot Light‐Emitting Diodes
Author(s) -
Li YunFei,
Chou ShuYu,
Huang Peng,
Xiao Changtao,
Liu Xiaofeng,
Xie Yu,
Zhao Fangchao,
Huang Yilong,
Feng Jing,
Zhong Haizheng,
Sun HongBo,
Pei Qibing
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201807516
Subject(s) - electroluminescence , materials science , quantum dot , light emitting diode , perovskite (structure) , optoelectronics , diode , elastomer , substrate (aquarium) , halide , indium tin oxide , indium , stretchable electronics , luminescence , composite material , nanotechnology , electronics , thin film , layer (electronics) , chemical engineering , inorganic chemistry , electrical engineering , oceanography , chemistry , engineering , geology
Stretchable light‐emitting diodes (LEDs) and electroluminescent capacitors have been reported to potentially bring new opportunities to wearable electronics; however, these devices lack in efficiency and/or stretchability. Here, a stretchable organometal‐halide‐perovskite quantum‐dot LED with both high efficiency and mechanical compliancy is demonstrated. The hybrid device employs an ultrathin (<3 µm) LED structure conformed on a surface‐wrinkled elastomer substrate. Its luminescent efficiency is up to 9.2 cd A −1 , which is 70% higher than a control diode fabricated on the rigid indium tin oxide/glass substrate. Mechanical deformations up to 50% tensile strain do not induce significant loss of the electroluminescent property. The device can survive 1000 stretch–release cycles of 20% tensile strain with small fluctuations in electroluminescent performance.