Raman spectroscopy of II-VI semiconductor nanostructures: CdS quantum dots

被引：57

作者：

Schreder, B ^{[1
]}

Dem, C ^{[1
]}

Schmitt, M ^{[1
]}

Materny, A ^{[1
]}

Kiefer, W ^{[1
]}

Winkler, U ^{[1
]}

Umbach, E ^{[1
]}

机构：

[1] Univ Wurzburg, Inst Phys Chem, D-97074 Wurzburg, Germany

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 2003年 / 34卷 / 02期

关键词：

semiconductors; nanostructures; quantum dots; cadmium sulfide;

D O I：

10.1002/jrs.959

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Information about confinement effects and dot-matrix interactions of CdS nanoparticles was obtained from resonance Raman spectroscopy. The quantum dots had diameters of 3 and 5 nm and were prepared with and without organic spacer groups. It was found that the spacer improves the quality of the nanocrystallites. No phonon confinement shift could be observed even for the small quantum dots. The linewidths of the overtone series point to a mechanism of vibrational relaxation which is dominated by the decay of the LO phonons into acoustic phonons. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：100 / 103

页数：4

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