journal article·2019-05

Stretchable Organometal‐Halide‐Perovskite Quantum‐Dot Light‐Emitting Diodes

Yun‐Fei Li, Shu‐Yu Chou, Peng Huang, Changtao Xiao, Xiaofeng Liu, Yu Xie, Fangchao Zhao, Yilong Huang, Jing Feng, Haizheng Zhong, Hong‐Bo Sun, Qibing Pei

Advanced Materials· Volume 31· Issue 22
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Abstract

Abstract 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.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Perovskite Materials and Applications · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering Henry Samueli School of Engineering and Applied Science University of California Los Angeles Los Angeles CA 90095 USA

State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University 2699 Qianjin Street Changchun 130012 China

Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Micro Nano Technology Center School of Physics Beijing Institute of Technology 5 Zhongguancun South Street, Haidian District Beijing 100081 China

State Key Lab of Precision Measurement Technology and Instruments Department of Precision Instrument Tsinghua University Haidian Beijing 100084 China

Funding

Air Force Office of Scientific Research · National Science Foundation

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