硫脲修饰ZnSe：Cu量子点的水相合成及荧光特性OA北大核心CSCDCSTPCD
Preparation and Fluorescence Properties of Aqueous Soluble Thiourea Modified ZnSe:Cu Quantum Dots
以3-巯基丙酸为稳定剂在水相中合成了Cu掺杂的ZnSe量子点(QDs),并利用硫脲(CH4N2S)对其进行表面修饰,制备出核壳结构的ZnSe：Cu/ZnS量子点。制得的量子点呈闪锌矿结构,尺寸约为5 nm,有较好的分散性,其荧光发射峰在460 nm左右。经CH4N2S修饰后,量子点表面形成了宽禁带的ZnS包覆层,将电子和空穴限域在了ZnSe：Cu核内,减少了表面发生非辐射复合的载流子,显著提高了量子点的荧光强度。与Na2S、硫代乙酰胺(…查看全部>>
Aqueous phase Cu doped ZnSe (ZnSe:Cu) quantum dots (QDs) stabilized with mercaptopropionic acid were prepared, and thiourea was used as a surface modifier to obtain core-shel ZnSe:Cu/ZnS QDs. QDs had a sphalerite structure, were uniformly dispersed, had an average particle size of approximately 5 nm and an emission peak at around 460 nm. After thiourea modification, a wide band-gap ZnS shel was coated on the QDs to passivate the surface, reduce surface sta…查看全部>>
汤子龙;李冬梅;程经纬;蒋洁如
上海大学材料科学与工程学院，上海200072上海大学材料科学与工程学院，上海200072上海大学材料科学与工程学院，上海200072上海大学材料科学与工程学院，上海200072
化学化工
量子点ZnSe:Cu/ZnS水相合成硫脲修饰低毒性紫外光照
Quantum dotZnSe:Cu/ZnSAqueous phase synthesisThiourea modifiedLow toxicityUV irradiation
《物理化学学报》 2013 (3)
653-659,7
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