Optical vibrational modes in (Cd, Pb, Zn)S quantum dots embedded in Langmuir-Blodgett matrices

被引：33

作者：

Milekhin, AG ^{[1
]}

Sveshnikova, LL

Repinsky, SM

Gutakovsky, AK

Friedrich, M

Zahn, DRT

机构：

[1] Russian Acad Sci, Inst Semicond Phys, Novosibirsk 630090, Russia

[2] Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany

来源：

THIN SOLID FILMS | 2002年 / 422卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

clusters; Fourier transform infrared spectroscopy; quantum effects; Raman scattering;

D O I：

10.1016/S0040-6090(02)00991-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structures with US, PbS, ZnS quantum dots (QDs) produced using the Langmuir-Blodgett technique were investigated by infrared (IR), Raman and ultra-violet-visible (UV-Vis) spectroscopies. The QDs size derived from the analysis of UV-Vis spectra and high-resolution transmission electron microscopy images amounts to 2-6 nm. The IR and Raman spectra reveal longitudinal optical phonons localised in QDs and surface vibrational modes. The frequency positions of the surface optical vibrational modes are adequately described taking into account confinement of fundamental optical phonons in the QDs. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：200 / 204

页数：5

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