双掺杂核壳结构ZnS:Mn@ZnS:Cu量子点的水热法合成及其光致发光性能  

Hydrothermal synthesis of double doped core-shell structure ZnS: Mn@ ZnS: Cu quantum dots and its photoluminescence properties

作　　者：丁然[1] 胡芹芹[1] 韩韵[1] 张霞[1] 王金丽[1] 吕鉴泉[1,2] 

机构地区：[1]湖北师范学院化学化工学院,湖北黄石435002 [2]嘉应学院化学与环境学院,广东梅州514015

出　　处：《湖北师范学院学报（自然科学版）》2015年第1期69-74,共6页Journal of Hubei Normal University(Natural Science)

基　　金：湖北省自然科学基金(2010CDA061);生命分析化学国家重点实验室开放基金(SKLACLS1209)资助

摘　　要：以巯基丙酸为稳定剂,水热法合成了分别用Mn和Cu双掺杂、核壳结构的新型量子点(ZnS:Mn@ZnS:Cu)。工作中,分别考察了原料配比、反应温度、反应时间、pH值、核壳比例和掺杂量对ZnS:Mn@ZnS:Cu光致发光性能的影响,用扫描隧道显微镜、X射线粉末衍射等手段表征了ZnS:Mn@ZnS:Cu的形貌与结构,用荧光等光谱方法研究了其性能。结果表明,ZnS:Mn@ZnS:Cu量子点性能稳定,其荧光、磷光和热稳定性等性能明显优于单掺杂的ZnS:Mn量子点。A novel double doped core-shell structure ZnS：Mn@ZnS：Cu QDs in aqueous solution has been synthesized by hydrothermal method and using MPA as stabilizer. The effects of doped ratio, reaction time, pH value and the ratio of nuclear and shell on the photoluminescence performance of ZnS：Mn@ZnS：Cu quantum dots are investigated. The morphology, crystal structure and properties of ZnS：Mn@ZnS：Cu quantum dots are respectively characterized by scanning tunneling microscope, X ray powder diffraction and fluorescence spectrum. Results indicated that fluorescence and phosphorescence performance, and stability of the new quantum dots are better than that of ZnS：Mn quantum dots significantly.

关 键 词：双掺杂 巯基丙酸 ZnS:Mn@ZnS:Cu量子点 光致发光 

分 类 号：O657.3[理学—分析化学]