应用化学2024，Vol.41Issue(6)：830-838,9.DOI:10.19894/j.issn.1000-0518.240017
含氟膦氧衍生物修饰的纯蓝光钙钛矿发光二极管
Pure Blue Perovskite Light-Emitting Diodes Modified with Fluorine-Containing Phosphine Oxide Derivatives
摘要
Abstract
Achieving efficient blue electroluminescence(EL)is a crucial challenge for the commercial application of perovskite light-emitting diodes(LEDs),especially for pure blue light with wavelengths of 465～475 nm.The main factors contributing to the low efficiency of blue light perovskite LEDs are the high defect density and difficulties in carrier injection induced by the mixed halogen and dimensionality reduction strategies.Herein,we propose an approach for achieving high-performance pure-blue perovskite LEDs by incorporating a fluorine-containing phosphine oxide derivative(PFPO).This incorporation significantly suppresses the non-radiative recombination and fine-tunes the low-dimensional phase distribution of quasi-2D perovskites.The device results reveal that the maximum external quantum efficiency(EQE)of PFPO-treated perovskite LEDs has increased from 1.83％to 3.62％.The emission peak is located at 466 nm,corresponding to CIE of(0.123,0.079),which is close to the International Telecommunication Union(ITU)Rec.2020 blue standard(0.131,0.046).关键词
钙钛矿/膦氧添加剂/蓝光发光二极管Key words
Perovskite/Phosphine oxide additive/Blue light emitting diodes分类
化学化工引用本文复制引用
张润,战宏梅,赵晨阳,程延祥,秦川江..含氟膦氧衍生物修饰的纯蓝光钙钛矿发光二极管[J].应用化学,2024,41(6):830-838,9.基金项目
国家自然科学基金(Nos.52203320,22075277)资助 Supported by the National Natural Science Foundation of China(Nos.52203320,22075277) （Nos.52203320,22075277）
