CdSe/ZnSe量子点的制备及电化学发光性能  

Synthesis and Electrochemical Luminescence Characterization of CdSe/ZnSe Quantum Dots

作　　者：樊雪梅 王书民 李哲建 王毅梦 刘萍 范新会[1,2] FAN Xuemei;WANG Shumin;LI Zhejian;WANG Yimeng;LIU Ping;FAN Xinhui(School of Materials Science and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China;College of Chemical Engineering and Modem Materials,Shangluo University,Shangluo 726000,China)

机构地区：[1]西安工业大学材料与化工学院,陕西西安710021 [2]商洛学院化学工程与现代材料学院,陕西商洛726000

出　　处：《材料开发与应用》2021年第1期29-33,共5页Development and Application of Materials

基　　金：陕西省科技厅项目(2018JM2040);商洛学院科技创新团队项目(18SCX003)

摘　　要：利用ZnSe半导体纳米材料晶体结构与CdSe相似、带隙更宽的特点,采用水热法合成了核-壳型CdSe/ZnSe量子点。结果表明:温度在70-160℃时,ZnSe壳逐渐包裹在CdSe核上,反应时间在0~4 h时,内壳在核上是均匀包裹的,当核壳摩尔比为1:3时.CdSe/ZnSe QDs的电化学发光性能最强,其电化学发光强度是CdSe量子点的6倍,且发光信号稳定。The core-shell CdSe/ZnSe quantum dots were synthesized by hydrothermal method based on the similar crystal structure and wider band gap of ZnSe semiconductor nanomaterial. The effect of reaction temperature, reaction time and molar ratio of Cd∶Zn on the synthesis of quantum dots were investigated. Results showed that when the temperature was between 70~160 ℃, the ZnSe shell was being coated on the CdSe core. When the reaction time was between 0~4 hours, the shell could be uniformly coated on the core. When the molar ratio of core to shell was 1∶3, the electrochemical luminescence performance was the best, and its electrochemical luminescence intensity was 6 times higher than that of CdSe quantum dots.

关 键 词：量子点 核-壳结构 电化学发光 

分 类 号：TQ422[化学工程]