Size-dependent photoluminescent properties of uncapped CdS particles prepared by acoustic wave and microwave method

被引：21

作者：

Arora, Sonia ^{[1
]}

Manoharan, S. Sundar ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Mat Chem Lab, Kanpur 208016, Uttar Pradesh, India

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2007年 / 68卷 / 10期

关键词：

chalcogenides; optical materials; chemical synthesis; luminescence;

D O I：

10.1016/j.jpcs.2007.05.018

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

US particles with crystallite size of 5-12 nm have been prepared via acoustic wave stimulated (sonochemical) route and microwave initiated combustion method. X-ray line broadening and transmission electron microscopy (TEM) suggest that sonochernical powders are more amorphous (5-10nm) compared to microwave-synthesized sulphides (10-15nm). The photoluminescent (PL) properties of powders with size < 10 nm show a clearly blue shifted, resolved emission with full-width at half-maxima (FWHM) similar to 100 nm, while powders with size > 15 nm show dominant blue to green narrow emission with FWHM similar to 60 nm. The mechanistic details of the synthetic route appear to affect the morphology and consequently the PL properties to a significant extent. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1897 / 1901

页数：5

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