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Highly Flexible Green Light-emitting Diode Based on CsPbBr3 Perovskite Quantum Dots
- Chinese Journal of Luminescence Vol. 41, Issue 3, Pages: 233-240(2020)
- 作者机构：
1. 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：Supported by National Natural Science Foundation of China(61822506,11674127,1197414)
DOI：10.3788/fgxb20204103.0233
CLC：
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GUO Jie, LU Min, SUN Si-qi, et al. Highly Flexible Green Light-emitting Diode Based on CsPbBr3 Perovskite Quantum Dots. [J]. Chinese Journal of Luminescence 41(3):233-240(2020)
GUO Jie, LU Min, SUN Si-qi, et al. Highly Flexible Green Light-emitting Diode Based on CsPbBr3 Perovskite Quantum Dots. [J]. Chinese Journal of Luminescence 41(3):233-240(2020) 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,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。
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,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.
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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