基于CsPbBr 3 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 CsPbBr 3 Perovskite Quantum Dots 郭洁 GUO Jie first-author 陆敏 LU Min 孙思琪 SUN Si-qi 胡强 HU Qiang 张佳 ZHANG Jia 白雪 BAI Xue 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 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 State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 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 3 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 2 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。 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 3 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. 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Highly efficient,color-pure,color-stable blue quantum dot light-emitting devices[J]. ACS Nano, 2013,7(8):7295-7302. 10.3788/fgxb20204103.0233 O482.31 国家自然科学基金（61822506，11674127，1197414）;国家重点研发项目（2017YFB0403601）资助 Supported by National Natural Science Foundation of China(61822506,11674127,1197414);National Key Research and Development Program of China(2017YFB0403601) 2020-01-03 2020-01-15 2020-01-08 2020-03-05 2020-08-11 3 41