Ce^(3+)掺杂ZnS量子点的制备和发光性能  

Synthesis and Photoluminescence Properties of Ce^(3+)-doped ZnS Quantum Dots

作　　者：雷燕 张广智 陈忠 李思媛 多树旺 Lei Yan;Zhang Guangzhi;Chen zhong;Li Siyuan;Duo Shuwang(School of Materials Science and Electromechanical,Jiangxi Science&Technology Normal University,Nanchang 330013,Jiangxi,P.R.China;Jiangxi Key Laboratory of Material Surface Engineering,Nanchang 330013,Jiangxi,P.R.China)

机构地区：[1]江西科技师范大学材料与机电学院,江西南昌330013 [2]江西省材料表面工程重点实验室,江西南昌330013

出　　处：《江西科技师范大学学报》2021年第6期26-29,共4页Journal of Jiangxi Science & Technology Normal University

基　　金：江西科技师范大学研究生创新专项资金资助项目(YC2019-X15);江西省大学生创新培养计划项目(S202111318057)。

摘　　要：本文采用低温固相法合成了不同浓度铈离子(Ce^(3+))掺杂的硫化锌(ZnS)量子点,探讨了Ce^(3+)掺杂对ZnS量子点的晶体结构、粒径、形貌以及光致发光性能的影响。结果表明:ZnS:x%Ce^(3+)(x=0,3,6,9)量子点具有立方闪锌矿晶体结构,平均粒径在6.16-9.73 nm之间。紫外-可见漫反射光谱和光致发光光谱结果显示:Ce^(3+)掺杂会降低ZnS量子点的禁带宽度,增加载流子浓度,提高辐射复合几率,进而提高量子点的发光强度。In this paper,zinc sulphide(ZnS) quantum dots doped with different concentrations of cerium ions(Ce^(3+))were synthesized by a low-temperature solid-phase method,and the effect of Ce^(3+) doping on the crystal structure,particle size,morphology and photoluminescence properties of ZnS quantum dots were investigated.The results showed that the ZnS:x%Ce^(3+)(x=0,3,6,9) quantum dots had cubic sphalerite crystal structures with average particle sizes ranging from 6.16-9.73 nm.The results of ultraviolet visible diffuse reflectance spectroscopy and photoluminescence spectroscopy showed that Ce^(3+) doping decreased the forbidden band width of the ZnS quantum dots,increased the carrier concentration,improved the chance of radiation complexation and thus increased the luminescence intensity of the quantum dots.

关 键 词：ZNS 铈离子 量子点 光致发光 

分 类 号：A150.15[哲学宗教—马克思主义哲学]