人工晶体学报2024，Vol.53Issue(7)：1121-1126,6.
溶液法生长大尺寸CsCu2I3钙钛矿单晶及其光学性能研究
Growth and Optical Properties of Large Size CsCu2I3 Single Crystal by Solution Method
摘要
Abstract
In recent years,copper-based perovskite has attracted widespread attention in the field of light emission and scintillation due to its excellent stability and environmental friendliness.However,most researches were focused on the OD and 1D CsCu2 I3 crystals,which limit the understanding for the intrinsic properties and anisotropy,as well as the practical application in scintillators.In this paper,a high-quality CsCu2I3 crystal with length of 5 mm was successfully grown by the solution cooling method.The crystal presents a transparent colorless appearance,with distinct edges and exposed facets.XRD results indicate that the CsCu2I3 crystal maintains good stability even after 6 months.The absorption spectrum shows an absorption peak of CsCu2I3 crystal at 310 nm.The band gap width is calculated to be 3.42 eV,indicating that the CsCu2I3 crystal is a wide-bandgap semiconductor.The emission wavelength of CsCu2I3 crystal is located at 580 nm,with full width at half maximum(FWHM)of 75 nm.The luminous chromaticity of the CsCu2I3 crystal falls at coordinates(0.47,0.50)in the yellow region on the CIE chromaticity diagram,belonging to a warm white tone with color temperature of 3 000 K.It is consistent with its yellow emission of the CsCu2I3 crystal under the ultraviolet lamp.The fluorescence lifetime of the CsCu2I3 crystal is measured to be 51.6 and 215.5 ns.关键词
CsCu2I3/晶体生长/溶液法/体块单晶/光学性能Key words
CsCu2I3/crystal growth/solution method/bulk single crystal/optical property分类
数理科学引用本文复制引用
凌昊,徐乐,陈思贤,唐远之,孙海滨,郭学,冯玉润,胡强强..溶液法生长大尺寸CsCu2I3钙钛矿单晶及其光学性能研究[J].人工晶体学报,2024,53(7):1121-1126,6.基金项目
国家自然科学基金(62105189) （62105189）
山东省高等学校青创科技支持计划(2022KJ231) （2022KJ231）
