Resonant effects in Raman scattering by optical phonons confined in CdSe quantum dots

被引：0
|
作者：
Vasilevskiy, MI [1 ]
Rolo, AG [1 ]
Artemyev, MV [1 ]
Mlayah, A [1 ]
Gomes, MJM [1 ]
Rakovich, YP [1 ]
机构：
[1] Univ Minho, Dept Fis, P-4710057 Braga, Portugal
来源：
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II | 2001年 / 87卷
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D O I：
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Raman scattering by optical phonons confined in CdSe spherical quantum dots (QDs) produced by a chemical synthesis method was studied theoretically and experimentally, in order to demonstrate specific effects related to the structure of the lowest electron-hole (e - h) state. The most important of these effects are a red shift (of several cm(-1)) of the Raman peak with respect to the bulk LO phonon frequency and a high depolarisation ratio for the scattering excited in resonance with the (1S(3/2) - 1s(e)) e - h state, which both decrease out of resonance.
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页码：1209 / 1210
页数：2
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