发光学报2025，Vol.46Issue(9)：1664-1674,11.DOI:10.37188/CJL.20250059
基于含氯配体后处理CsPbBr3纳米晶用于青光LED
Chlorine Ligand Post-treatment of CsPbBr3 Perovskite Nanocrystals for Cyan-emitting LED Applications
摘要
Abstract
Inorganic perovskite CsPb X3(X=Cl,Br,I)nanocrystals(PNCs)have the advantages of high luminous efficiency and adjustable emission wavelength,but their poor stability limits practical applications.This study em-ploys chlorine-containing ligands for post-treatment to synthesize CsPb(Br/Cl)3 PNCs with tunable emission colors and investigates their luminescent properties and stability.The introduced Cl⁻ ions exchange with Br-in CsPbBr3 PNCs and passivate surface defects.By adjusting the concentration of the chlorine-containing ligands,the emission of CsPb(Br/Cl)3 PNCs can be tuned from green to blue light.Notably,cyan-emitting CsPb(Br/Cl)3 PNCs maintain high luminescence intensity after being immersed in water for 15 days,with stable emission peak position and full width at half maximum(FWHM).Their photoluminescence quantum yield(PLQY)improves compared to untreated CsPbBr3 PNCs.Finally,a cyan-light-emitting diode(LED)using CsPb(Br/Cl)3 PNCs with a 370 nm chip was fabri-cated,achieving CIE chromaticity coordinates of(0.116,0.264),showing potential to supplement the cyan light in white LEDs.关键词
钙钛矿纳米晶/含卤配体/稳定性/发光二极管Key words
perovskite nanocrystals/halogenated ligand/stability/light emitting diode分类
数理科学引用本文复制引用
朱兴华,李源,钱瑶,蒋东亮,阮振乔,陈岩..基于含氯配体后处理CsPbBr3纳米晶用于青光LED[J].发光学报,2025,46(9):1664-1674,11.基金项目
广东省高校重点领域专项(2021ZDZX1022) （2021ZDZX1022）
五邑大学高质量课程建设与创新创业教育建设改革项目(KG2022048) （KG2022048）
广东省大学生创新创业训练计划项目(2022CX37)Supported by Special Projects in Key Fields of Guangdong Universities(2021ZDZX1022) （2022CX37）
High-quality Curriculum Construc-tion and Innovation and Entrepreneurship Education Construction Reform Project of Wuyi University(KG2022048) （KG2022048）
University Students Innovation and Entrepreneurship Training Program of Guangdong Province(2022CX37) （2022CX37）
