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具有电荷捕获稀释功能的高亮度全聚合物可拉伸LED
作者:小柯机器人 发布时间:2022/3/27 13:16:15

美国斯坦福大学Bao, Zhenan团队研制了具有电荷捕获稀释功能的高亮度全聚合物可伸缩LED。相关研究成果发表在2022年3月23日出版的《自然》。

皮肤上的下一代发光显示器应柔软、可伸缩且明亮。之前报道的可拉伸发光器件大多基于无机纳米材料,如发光电容器、量子点或钙钛矿。它们要么需要高工作电压,要么在压力下具有有限的延展性和亮度、分辨率或鲁棒性。另一方面,本质上可伸缩的聚合物材料具有良好的应变耐受性。然而,对于本质上可伸缩的发光二极管来说,实现高亮度仍然是一个巨大的挑战。

该文中,研究人员开发了一种材料设计策略和制造工艺,以实现高亮度(约7450坎德拉/平方米)、电流效率(约5.3坎德拉/安培)和可伸缩性(约100%应变)的可拉伸全聚合物基发光二极管。研究人员制作了红色、绿色和蓝色的可伸缩全聚合物发光二极管,实现了皮肤上的无线供电和脉冲信号的实时显示。

该研究工作标志着高性能可伸缩显示器的巨大方向。

附:英文原文

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

Author: Zhang, Zhitao, Wang, Weichen, Jiang, Yuanwen, Wang, Yi-Xuan, Wu, Yilei, Lai, Jian-Cheng, Niu, Simiao, Xu, Chengyi, Shih, Chien-Chung, Wang, Cheng, Yan, Hongping, Galuska, Luke, Prine, Nathaniel, Wu, Hung-Chin, Zhong, Donglai, Chen, Gan, Matsuhisa, Naoji, Zheng, Yu, Yu, Zhiao, Wang, Yang, Dauskardt, Reinhold, Gu, Xiaodan, Tok, Jeffrey B.-H., Bao, Zhenan

Issue&Volume: 2022-03-23

Abstract: Next-generation light-emitting displays on skin should be soft, stretchable and bright1,2,3,4,5,6,7. Previously reported stretchable light-emitting devices were mostly based on inorganic nanomaterials, such as light-emitting capacitors, quantum dots or perovskites6,7,8,9,10,11. 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 7,450candela per square metre), current efficiency (about 5.3candela 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.

DOI: 10.1038/s41586-022-04400-1

Source: https://www.nature.com/articles/s41586-022-04400-1

期刊信息

Nature:《自然》,创刊于1869年。隶属于施普林格·自然出版集团,最新IF:42.778
官方网址:http://www.nature.com/