基于CsPbBr3钙钛矿量子点的高柔性绿光发光二极管

郭洁; 陆敏; 孙思琪; 胡强; 张佳; 白雪

doi:10.3788/fgxb20204103.0233

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基于CsPbBr₃钙钛矿量子点的高柔性绿光发光二极管

材料合成及性能 | 更新时间：2020-08-12

- 基于CsPbBr₃钙钛矿量子点的高柔性绿光发光二极管
- Highly Flexible Green Light-emitting Diode Based on CsPbBr₃ Perovskite Quantum Dots
- 发光学报 2020年41卷第3期页码：233-240
- 作者机构：
  
  吉林大学电子科学与工程学院, 集成光电子学国家重点联合实验室, 吉林长春 130012
- 作者简介：
- 基金信息：
  
  国家自然科学基金（61822506，11674127，1197414）();国家重点研发项目（2017YFB0403601）资助()
- DOI：10.3788/fgxb20204103.0233
  中图分类号： O482.31
- 纸质出版日期：2020-3-5，
  
  网络出版日期：2020-1-8，
  
  收稿日期：2020-1-3，
  
  修回日期：2020-1-15，
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郭洁, 陆敏, 孙思琪等. 基于CsPbBr3钙钛矿量子点的高柔性绿光发光二极管[J]. 发光学报, 2020,41(3): 233-240

GUO Jie, LU Min, SUN Si-qi etc. Highly Flexible Green Light-emitting Diode Based on CsPbBr3 Perovskite Quantum Dots[J]. Chinese Journal of Luminescence, 2020,41(3): 233-240
郭洁, 陆敏, 孙思琪等. 基于CsPbBr3钙钛矿量子点的高柔性绿光发光二极管[J]. 发光学报, 2020,41(3): 233-240 DOI： 10.3788/fgxb20204103.0233.

GUO Jie, LU Min, SUN Si-qi etc. Highly Flexible Green Light-emitting Diode Based on CsPbBr3 Perovskite Quantum Dots[J]. Chinese Journal of Luminescence, 2020,41(3): 233-240 DOI： 10.3788/fgxb20204103.0233.

摘要

众所周知，柔性信息显示将在未来的光电应用中发挥重要作用。然而，由于电极材料和柔性衬底的选择有限，制备高效、稳定的柔性发光二极管仍然存在巨大的挑战。以光聚合物作为柔性衬底、CsPbBr

量子点作为发光层，成功地制备了柔性钙钛矿发光二极管。为了改善电子的注入和传输，采用Ag作阴极。结果表明，高柔性的钙钛矿发光二极管的最高亮度为10 325 cd/m

且具有高色纯度（FWHM=19 nm）。此外，制备的钙钛矿发光二极管具有良好的柔性和机械延展性。在大约180的弯曲角度下反复弯曲100次后，仍然保持着良好的器件性能。该研究为未来柔性显示器的应用奠定了研究基础。

Abstract

Flexible information displays have the promising potential for the future optoelectronic application. However

achieving the highly efficient and stable flexible light-emitting diodes (LEDs) is still a big challenge due to the limited choices of electrode materials and flexible substrates. Herein

the flexible perovskite light-emitting diodes (Pe-LEDs) by combining the flexible substrate based on a photopolymer with the CsPbBr

quantum dots (QDs) emitting layer were fabricated. In order to improve electrons injection and transport

Ag was used as the cathode. As a result

the green light emitting Pe-LEDs with high luminance of 10 325 cdm

-2

and high color purity with the full-width-at-half-maximum (FWHM) of 19 nm were obtained. In addition

the Pe-LEDs exhibit good flexibility and mechanical ductility

and the as-prepared flexible device still maintains its optoelectronic performance even after repeated bending 100 cycles under a bending angle of about 180. The research presents a further step toward the future application of flexible displays.

关键词

CsPbBr3量子点光聚合物银电极柔性发光二极管

Keywords

CsPbBr3 QDsphotopolymerAg electrodeflexible light-emitting diode

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