ZnS-AgInS_2量子点的制备、表征及修饰  

Preparation,modification and characterization of ZnS-AgInS_2 quantum dots

作　　者：李小花 章竹君[1] 

机构地区：[1]陕西省生命分析化学重点实验室陕西师范大学化学与材料科学学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2010年第2期59-62,共4页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(30470886)

摘　　要：通过热分解（AgIn）xZn2（1-x）（S2CN（C2H5）2）4前驱体,以巯基乙酸为修饰剂合成了水溶性的ZnS-AgInS2量子点.该量子点不含有毒元素.在室温下,它的发射波长可通过只控制前驱体的组成就能得到从绿到红的不同荧光的量子点,而前驱体组成的变化不会影响量子点的尺寸.量子点粒径介于6-7 nm之间,其荧光量子产率最高可达31%.ZnS-AgInS2 water-soluble fluorescent quantum dots were prepared by thermal decomposition of（AgIn）xZn2（1-x）（S2CN（C2H5）2）4 and followed by modification with mercaptoacetic acid.ZnSAgInS2 quantum dots contain no highly toxic elements.At ambient temperature,the resulting particles exhibited broad PL spectrum and the emission color could be tuned from green to red,depending on their chemical composition.The resultant particles were measured in size range 6～7 nm.The highest quantum yield for ZnS-AgInS2 quantum dots was determined to be 31%.

关 键 词：量子点 前驱体 荧光 

分 类 号：TB383[一般工业技术—材料科学与工程]