CdTe量子点的水相制备  

Synthesis of CdTe Quantum Dots by Aqueous Phase

作　　者：孙剑洁[1] 杨娟[1] 许世超[1] 张纪梅[1] 

机构地区：[1]天津工业大学材料化工学院,天津300160

出　　处：《化工时刊》2009年第4期11-13,共3页Chemical Industry Times

基　　金：天津市自然科学基金项目(07JCYBJC15900)

摘　　要：在水相中以巯基丙酸作为稳定剂,合成出具有不同荧光发射波长的CdTe量子点(QDs),利用紫外吸收光谱(UV)、荧光光谱(FS)以及透射电子显微镜(TEM)对CdTe QDs进行了表征。研究了反应温度及pH值对所制备的CdTe QDs光学性质的影响。实验结果表明,合成CdTe QDs的最佳温度为96℃,pH值为10,且随着时间的增加量子点的粒径增大。Water -soluble CdTe quantum dots （QDs） which has different emission wavelength were synthesized in aqueous solution with mercaptopropionic acid as stabilizer, and characterized by ultraviolet absorption spectrum （ UV）, fluorescent spectra （FS） and high quality tem technique （HRTEM）. The optical properties of CdTe QDs were studied under different reaction temperature and pH. The result showed that the best temperature was 96℃ and the optimal pH was 10 and the particle size was increased with the increasing reaction time.

关 键 词：纳米材料 CDTE量子点 荧光性质 粒子直径 

分 类 号：TB383.1[一般工业技术—材料科学与工程]