液晶与显示2026，Vol.41Issue(1)：16-25,10.DOI:10.37188/CJLCD.2025-0093
超声驱动水油两相中绿色合成高稳定性CsPbBr3@MS-SiO2复合材料
Ultrasound-driven green synthesis of highly stable CsPbBr3@MS-SiO2 composites in a water-oil biphasic system
摘要
Abstract
Lead halide perovskite nanocrystals have garnered significant interest due to their exceptional optical properties.However,their poor environmental stability and the toxicity of conventional synthetic methods continue to impede practical applications.In this study,we report a novel ultrasound-assisted,green water/oil biphasic strategy for the in situ synthesis of CsPbBr3 nanocrystals encapsulated within mesoporous silica microspheres(CsPbBr3@MS).In this approach,ligand-free CsBr dissolved in water diffuses into the oil phase under ultrasonic agitation,where it reacts with oleic acid-coordinated Pb2+species preloaded in the silica mesopores,resulting in confined nucleation and encapsulation of CsPbBr3 NCs within the silica framework.Optical characterization and stability assessments demonstrate that mesoporous encapsulation substantially enhances both the photoluminescence properties and environmental stability of CsPbBr3@MS.Furthermore,tuning the aqueous CsBr concentration enables optimization of the optical output,yielding a maximum photoluminescence quantum yield(PLQY)of up to 60%.A dense SiO2 shell was subsequently formed on the composite surface via TEOS,facilitated by trace water within the mesopores.This secondary passivation layer further improved optical durability,retaining 80%of the initial emission intensity after 60 h of water immersion.Overall,this work presents a green and effective strategy for synthesizing environmentally stable,high-performance perovskite nanomaterials.关键词
钙钛矿纳米晶/超声诱导/介孔硅微球/绿色合成/稳定性Key words
perovskite nanocrystals/ultrasound-assisted synthesis/mesoporous silica microspheres/green synthesis/stability分类
数理科学引用本文复制引用
马腾,谢金峰,张世瑞,杜海琼,赵成思,薛琪,黄河..超声驱动水油两相中绿色合成高稳定性CsPbBr3@MS-SiO2复合材料[J].液晶与显示,2026,41(1):16-25,10.基金项目
国家自然科学基金(No.52102185,No.52402198) （No.52102185,No.52402198）
江苏省科技厅前沿技术基础研究重大项目(No.BK20232041,No.BK20240821) （No.BK20232041,No.BK20240821）
苏州大学低维光电材料与器件国际联合实验室和苏州市外籍院士工作站项目 Supported by National Natural Science Foundation of China(No.52102185,No.52402198) （No.52102185,No.52402198）
Jiangsu Provincial Department of Science and Technology Leading Technology Basic Research Major Project(No.BK20232041,No.20240821) （No.BK20232041,No.20240821）
Project of International Joint Laboratory on Low-Dimensional Optoelectronic Materials and Devices of Soochow University as well as the Suzhou Foreign Academician Workstation （）
