Study of water-sol core-shell CdSe/CdS quantum dots

被引：0
|
作者：
Teng, F [1 ]
Tang, AW
Gao, YH
Liang, CJ
Xu, Z
Wang, YS
机构：
[1] Beijing Jiaotong Univ, Inst Optoelect Technol, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Lab Informat Storage Display & Mat, Beijing 100044, Peoples R China
来源：
SPECTROSCOPY AND SPECTRAL ANALYSIS | 2005年 / 25卷 / 05期
关键词：
II-VI semiconductor; quantum dots; water-sol;
D O I：
暂无
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Water-sol core/shell CdSe/CdS quantum dots (QDs) were synthesized in aqueous solution by using mercapto-acetate acid as stabilizer. The UV-Vis absorption and emission spectra were studied. The size of the SdSe-core was about 2 nm estimated by absorption edge and X-ray powder diffraction(XRD). The structure was also characterized by X-ray photoelectron spectroscopy(XPS). The intensity of luminescence of the quantum dots was greatly enhanced after the surface was modified with US shell. Red shift of the peak was shown in both the emission and absorption spectra.
引用
收藏
页码：651 / 654
页数：4
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