Control of Particle Size Distribution of CdS Quantum Dots in Gel Matrix

被引：8

作者：

Takada, Toshimi m ^{[1
]}

Li, Chia-Yen ^{[1
]}

Tseng, Justine Y. ^{[1
]}

Mackenzie, John D. ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90024 USA

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1994年 / 1卷 / 02期

关键词：

sol-gel; CdS crystallites; NLO materials; quantum dots; particle size;

D O I：

10.1007/BF00490242

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel sol-gel process has been developed to prepare nano-sized CdS quantum dots to improve the nonlinear optical properties. A bifunctional ligand, 3-aminopropyl triethoxysilane H2N(CH2)(3)Si(OC2H5)(3), was used to disperse the Cd2+ ions in the gel solution. The CdO and CdS particles were observed by transmission electron microscope (TEM). The size of CdS microcrystallites with concentrations up to 13 wt.% in SiO2 gel matrix was found to be in the range of 2-4 nm with a very sharp size distribution. A well-defined absorption edge was observed in the absorption spectrum.

引用

页码：123 / 132

页数：10

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