Size effects on the phonon spectra of quantum dots in CdTe-doped glasses

被引：54

作者：

dePaula, AM

Barbosa, LC

Cruz, CHB

Alves, OL

Sanjurjo, JA

Cesar, CL

机构：

[1] Instituto de Física, Universidade Estadual de Campinas, 13083-970 Campinas-SP

[2] Instituto de Química, Universidade Estadual de Campinas, 13083-970 Campinas-SP

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 03期

关键词：

D O I：

10.1063/1.118059

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the confinement effects on the phonon Spectra of CdTe quantum dots by means of resonant Raman scattering measurements. The spectra show clearly longitudinal optical phonons, surface phonons and some of their overtone combinations. We show that the scattering due to surface phonons increases as the quantum dot size decreases. The results are obtained by tuning the laser excitation energy to resonance for quantum dots of different sizes inside the broad size distribution in CdTe-doped glasses. (C) 1996 American Institute of Physics.

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页码：357 / 359

页数：3

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