CdSe/SiO_2荧光微球的制备及其荧光性能(英文)  

PREPARATION AND PHOTOLUMINESCENCE PROPERTIES OF CdSe/SiO_2 FLUORESCENT MICROSPHERES

作　　者：王德平[1] 胡朗[1] 吴立功[1] 姚爱华[1] 黄文旵[1] 林文庆 奥野敦史 益永达则 

机构地区：[1]同济大学材料科学与工程学院,上海200092 [2]日本三悠树脂株式会社,大阪569-8558

出　　处：《硅酸盐学报》2010年第10期2001-2004,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50572072,50702037);上海科委纳米专项基金(0852nm05200)资助项目

摘　　要：利用Stber法制备了CdSe/SiO2荧光微球。用透射电子显微镜,共聚焦显微镜和X射线衍射测试荧光微球的形貌和晶体结构;用荧光光谱表征荧光微球的荧光性能;用动态-静态激光散射仪表征荧光微球的尺寸分布。结果表明:CdSe量子点被包裹在SiO2微球内,并形成了具有良好荧光性能的CdSe/SiO2荧光微球,其荧光性能与合成工艺条件有着显著的相关性。Silica sphere embedded multiple water-soluble CdSe semiconductor quantum dots（QDs） were prepared by Stber method.The morphology and crystal structure of a typical CdSe QDs/silica composite microspheres were characterized by transmission electron microscopy,confocal microscope and X-ray diffraction.The size distribution of as-synthesized samples was recorded by the dynamic-static laser scatterometer.The results show that CdSe QDs are indeed embedded in the silica coating.The photoluminescence spectra and macroscopic fluorescent picture clearly indicate that the CdSe/SiO2 composite microsphere has good fluorescence properties.The preparation conditions have a strong influence on the photoluminescence of the CdSe/SiO2 fluorescent microspheres.

关 键 词：半导体量子点 荧光微球 Stber法 

分 类 号：TM282[一般工业技术—材料科学与工程]