摘要
以氧化铟、氧化锑和氯化铯为基本原料,浓盐酸作为溶剂,采用低温水热法合成Sb^(3+)掺杂全无机Cs_(2)InCl_(5)·H_(2)O(Cs_(2)InCl_(5)·H_(2)O∶Sb^(3+))钙钛矿。研究了Sb^(3+)的掺杂量(0、2%、4%、6%、8%、10%、20%)对Cs_(2)InCl_(5)·H_(2)O钙钛矿发光性能的影响。采用紫外-可见分光光谱、荧光光谱和X射线衍射仪(XRD)等表征该样品的吸收光谱、发光性能和晶体结构。结果表明,少量Sb^(3+)掺杂Cs_(2)InCl_(5)·H_(2)O钙钛矿不会改变其结构。当Sb^(3+)的掺杂量为10%时,达到最强荧光发射,发射峰波长约为620nm,荧光寿命为8.13μs。采用荧光转换法,将实验合成的Cs_(2)InCl_(5)·H_(2)O∶Sb^(3+)钙钛矿纳米晶与商用蓝色发光的BaMgAl_(10)O_(17)∶Eu和绿色发光的(Sr,Ba)_(2)SiO_(4)∶Eu荧光粉混合涂于365nm的紫外芯片上,封装得到显色指数(CRI)为91.8,CIE色坐标为(0.326,0.316),色温为5843K的白光LED。说明Cs_(2)InCl_(5)·H_(2)O∶Sb^(3+)钙钛矿纳米晶在白光LED领域具有很好的应用前景。
Sb^(3+)-doped all-inorganic Cs_(2)InCl_(5)·H_(2)O(Cs_(2)InCl_(5)·H_(2)O∶Sb^(3+)) perovskite was synthesized by low-temperature hydrothermal method with indium oxide,antimony oxide,and cesium chloride as raw materials and concentrated hydrochloric acid as solvent.The effects of doping amounts of Sb^(3+)(0,2%,4%,6%,8%,10%,20%) on the luminescence performance of Cs_(2)InCl_(5)·H_(2)O perovskite were studied in detail.The absorption spectra,luminescence properties and crystal structure of the samples were characterized via X-ray diffraction,fluorescence spectroscopy and UV-Vis absorption spectrometry.The results showed that the crystal structure of Cs_(2)InCl_(5)·H_(2)O perovskite was not changed with the introduction of a small amount of Sb^(3+).The maximum fluorescence emission was achieved,with an emission peak wavelength of about 620nm and a fluorescence lifetime of 8.13 us when the doping amount of Sb^(3+) was 10%.A white LED was fabricated by coating the phosphors,mixing the red light-emitting Cs_(2)InCl_(5)·H_(2)O∶Sb^(3+) perovskite,blue light-emitting BaMgAl_(10)O_(17)∶Eu,and green light-emitting(Sr,Ba)_(2)SiO_(4)∶Eu,onto a 365nm UV chip.The white LED showed a high color rendering index(CRI) of 91.8,CIE color coordinates of(0.326,0.316),and a color temperature of 5843 K,which indicated that Cs_(2)InCl_(5)·H_(2)O∶Sb^(3+) perovskite had significant potential for application in white LEDs.
作者
韦星明
王荣芳
韦庆敏
黄小英
陶萍芳
章浩
Wei Xingming;Wang Rongfang;Wei Qingmin;Huang Xiaoying;Tao Pingfang;Zhang Hao(Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology,Yulin Normal University,Yulin 537000)
出处
《化工新型材料》
北大核心
2025年第3期235-239,共5页
New Chemical Materials
基金
玉林师范学院高层次人才科研启动基金(G2023ZK10)
玉林市科技计划项目(玉市科202235099)
广西区级大学生创新创业训练计划项目(S202310606114,S202310606152)。
