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

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)

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.

Original languageEnglish
Article number1807516
JournalAdvanced Materials
Volume31
Issue number22
DOIs
Publication statusPublished - May 2019

Keywords

  • Light-emitting diodes
  • Perovskites
  • Quantum-dots
  • Stretchable electronics

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