Size-dependent fluorescence in CdSe quantum dots

被引：4
|
作者：
Dey, Suhash C. [1 ]
Nath, Siddhartha S. [2 ,3 ,4 ]
机构：
[1] Assam Univ, Dept Phys, Silchar, Assam, India
[2] Assam Univ, Cent Instrumentat Lab, Silchar, Assam, India
[3] Assam Univ, Dept Phys, Silchar, Assam, India
[4] Gauhati Univ, Gauhati, Assam, India
来源：
EMERGING MATERIALS RESEARCH | 2012年 / 1卷 / 03期
关键词：
quantum dots; semiconductor devices; nanoelectronics; ELECTROLUMINESCENCE;
D O I：
10.1680/emr.11.00004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the authors adopt a non-toxic chemical route for synthesis of cadmium selenium quantum dots (QD) of five different size distributions. They have been characterized by UV/Vis absorption spectroscopy and transmission electron microscopy. Fluorescence spectroscopy is performed to investigate their optical emission with size-variation. By UV/Vis spectroscopy, a blue-shift is revealed and the band gap is calculated in each case. Transmission electron micrographs show QD of different size distributions (in the range 2-8 nm) and fluorescence spectra reveal greenorange luminescence depending upon the size distribution.
引用
收藏
页码：117 / 120
页数：4
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