应用化学2025，Vol.42Issue(6)：776-784,中插1-中插3,12.DOI:10.19894/j.issn.1000-0518.250068
手性配体结构对红光准二维钙钛矿圆偏振电致发光性能的影响
Effect of Chiral Ligand Structure on Red Quasi-2D Perovskites Circularly Polarized Electroluminescence Performance
摘要
Abstract
Circularly polarized light-emitting diodes(CP-LEDs)hold significant promise for applications in 3D displays and biosensing,and so on.While chiral perovskite CP-LEDs research has predominantly focused on green emission,the development of red devices remains a challenge.In this study,we utilized chiral quasi-two-dimensional(Quasi-2D)perovskites as emitting materials to investigate the impact of chiral ligand structure on film morphology,photophysical properties,and device performance.By introducing chiral R-MBAI and R-MPEAI ligands with varying steric hindrances,we demonstrated that the R-MPEAI ligand,with smaller steric hindrance,effectively suppresses the formation of large n phases,optimizes energy transfer processes,and reduces the non-radiative recombination rate,leading to enhanced photoluminescence.Consequently,the R-MPEAI-based device achieved pure red emission at 641 nm with a 7.25%external quantum efficiency(EQE)and a 2.86%circularly polarized electroluminescence dissymmetry factor(gEL),realizing perovskite-based pure red CP-LEDs.This work offers a new strategy for developing high-performance red CP-LEDs.关键词
发光二极管/手性配体/圆偏振电致发光/纯红光Key words
Light-emitting diodes/Chiral ligands/Circularly polarized electroluminescence/Pure red emission分类
化学引用本文复制引用
曲跃,战宏梅,赵晨阳,程延祥,秦川江..手性配体结构对红光准二维钙钛矿圆偏振电致发光性能的影响[J].应用化学,2025,42(6):776-784,中插1-中插3,12.基金项目
吉林省科技发展计划项目(No.20240101144JC)、国家自然科学基金(No.52203320)和吉林省与中国科学院科技合作项目(No.2023SYHZ0017)资助 Supported by Jilin Province Science and Technology Development Plan Project(No.20240101144JC),the National Natural Science Foundation of China(No.52203320)and the Science and Technology Cooperation Project between Jilin Province and Chinese Academy of Sciences(No.2023SYHZ0017) （No.20240101144JC）
