Resonance exciton-phonon spectra in open ZnCdSe/ZnSe nanowires: Raman scattering and hot luminescence, extended and localized exciton states

被引：6
|
作者：
Travnikov, VV [1 ]
Kaibyshev, VK [1 ]
机构：
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
来源：
PHYSICS OF THE SOLID STATE | 2003年 / 45卷 / 07期
关键词：
D O I：
10.1134/1.1594258
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Low-temperature (T similar to 8 K) secondary emission spectra of open Zn0.87Cd0.13Se/ZnSe nanowires were studied comprehensively in the region of the ground excitonic state under tunable laser excitation. The spectra revealed a fine structure produced in the interaction of excitons with optical phonons. The observed resonance exciton-phonon (REP) lines are shown to be formed through two different mechanisms. The strongest component is due to Raman scattering via free excitonic states. The other REP lines are generated in the hot luminescence of localized excitons. The spectrum of the optical phonons involved in the formation of the REP lines in the biaxially strained Zn0.87Cd0.13Se/ZnSe structures was analyzed. (C) 2003 MAIK "Nauka / Interperiodica".
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页码：1379 / 1387
页数：9
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