CTAB与FA+提高CsPbBr3纳米片发光及稳定性研究
Synergistic Effects of CTAB and FA+ on Enhancing Stability and Optical Properties of CsPbBr3 Nanoplates
魏艺 1李勇飞 1姚克欣1
作者信息
- 1. 重庆大学化学化工学院，重庆400044
- 折叠
摘要
铅卤钙钛矿纳米晶因发光效率高、色纯度优异及光谱可调性强，被视为下一代高性能光电材料的理想候选体系，但其稳定性不足严重制约实际应用。本文提出基于油酸（OA）辅助溶解十六烷基三甲基溴化铵（CTAB）于1-十八烯中的合成策略。以CTAB替代传统OAm配体并兼作溴源，同时引入甲脒离子（FA+）对CsPbBr3纳米片的组分进行协同调控，成功构建具有二维纳米片堆叠特征的FAxCs1?xPbBr3纳米结构。研究表明，FA+的引入增强了晶体结构均一性，窄化了半峰宽，并使荧光量子产率提升约3倍。与传统OAm/OA配体体系相比，采用CTAB/OA配体体系制备的钙钛矿纳米片展现出更优异的水稳定性。
Abstract
Lead halide perovskite nanocrystals are promising candidates for next-generation optoelectronic materials due to their high luminescence efficiency, excellent color purity, and widely tunable optical bandgaps. However, their practical application is severely limited by poor stability. Herein, we propose a synthetic strategy based on dissolution of cetyltrimethylammonium bromide (CTAB) in 1-octadecene with oleic acid (OA) assistance. CTAB replaces the traditional oleylamine (OAm) ligand and serves as the bromide source. Simultaneously, formamidinium (FA?) ions are introduced to enable synergistic compositional regulation of CsPbBr3 nanoplatelets, yielding FAxCs1?xPbBr3 nanostructures with a two-dimensional nanoplatelet stacking morphology. Results demonstrate that FA? incorporation enhances structural uniformity, reduces the full width at half maximum, and increases the photoluminescence quantum yield by approximately threefold. Notably, compared with the conventional OAm/OA ligand system, perovskite nanoplatelets prepared using the CTAB/OA system exhibit substantially improved water stability.关键词
无机化学/铅卤钙钛矿/离子掺杂/光学性质/稳定性Key words
inorganic chemistry/lead halide perovskite/ion doping/optical properties/stability引用本文复制引用
魏艺,李勇飞,姚克欣.CTAB与FA+提高CsPbBr3纳米片发光及稳定性研究[EB/OL].(2026-05-19)[2026-05-20].http://www.paper.edu.cn/releasepaper/content/202605-87.学科分类
化学/物理学/晶体学
评论