High-brightness all-polymer stretchable LED with charge-trapping dilution

Zhitao Zhang, Weichen Wang, Yuanwen Jiang, Yi-Xuan Wang, Yilei Wu, Jian-Cheng Lai, Simiao Niu, Chengyi Xu, Chien-Chung Shih, Cheng Wang, Hongping Yan, Luke Galuska, Nathaniel Prine, Hung-Chin Wu, Donglai Zhong, Gan Chen, Naoji Matsuhisa, Yu Zheng, Zhiao Yu, Yang Wang, Reinhold Dauskardt, Xiaodan Gu, Jeffrey B.-H. Tok and Zhenan Bao ()
Additional contact information
Zhitao Zhang: Stanford University
Weichen Wang: Stanford University
Yuanwen Jiang: Stanford University
Yi-Xuan Wang: Stanford University
Yilei Wu: Stanford University
Jian-Cheng Lai: Stanford University
Simiao Niu: Stanford University
Chengyi Xu: Stanford University
Chien-Chung Shih: Stanford University
Cheng Wang: Lawrence Berkeley National Laboratory
Hongping Yan: Stanford University
Luke Galuska: University of Southern Mississippi
Nathaniel Prine: University of Southern Mississippi
Hung-Chin Wu: Stanford University
Donglai Zhong: Stanford University
Gan Chen: Stanford University
Naoji Matsuhisa: Stanford University
Yu Zheng: Stanford University
Zhiao Yu: Stanford University
Yang Wang: Stanford University
Reinhold Dauskardt: Stanford University
Xiaodan Gu: University of Southern Mississippi
Jeffrey B.-H. Tok: Stanford University
Zhenan Bao: Stanford University

Nature, 2022, vol. 603, issue 7902, 624-630

Abstract: Abstract Next-generation light-emitting displays on skin should be soft, stretchable and bright1–7. Previously reported stretchable light-emitting devices were mostly based on inorganic nanomaterials, such as light-emitting capacitors, quantum dots or perovskites6–11. They either require high operating voltage or have limited stretchability and brightness, resolution or robustness under strain. On the other hand, intrinsically stretchable polymer materials hold the promise of good strain tolerance12,13. However, realizing high brightness remains a grand challenge for intrinsically stretchable light-emitting diodes. Here we report a material design strategy and fabrication processes to achieve stretchable all-polymer-based light-emitting diodes with high brightness (about 7,450 candela per square metre), current efficiency (about 5.3 candela per ampere) and stretchability (about 100 per cent strain). We fabricate stretchable all-polymer light-emitting diodes coloured red, green and blue, achieving both on-skin wireless powering and real-time displaying of pulse signals. This work signifies a considerable advancement towards high-performance stretchable displays.

Date: 2022
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DOI: 10.1038/s41586-022-04400-1

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