Size effects on Raman spectra of small CdSe nanoparticles in polymer films

被引：91

作者：

Dzhagan, V. M. ^{[1
]}

Valakh, M. Ya ^{[1
]}

Raevskaya, A. E. ^{[2
]}

Stroyuk, A. L. ^{[2
]}

Kuchmiy, S. Ya ^{[2
]}

Zahn, D. R. T. ^{[3
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Semicond Phys, UA-03028 Kiev, Ukraine

[2] Natl Acad Sci Ukraine, Inst Phys Chem, UA-03028 Kiev, Ukraine

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

来源：

NANOTECHNOLOGY | 2008年 / 19卷 / 30期

关键词：

D O I：

10.1088/0957-4484/19/30/305707

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The results of a resonant Raman scattering (RRS) study of polymer-stabilized colloidal CdSe nanoparticles (NPs) are reported. The size-selective nature of the RRS is demonstrated by analysing the NP ensembles with different average size (d) over bar and size distribution Delta d using a set of excitation wavelengths. The effect of size selection on the estimation of (d) over bar and Delta d values from the RRS spectra is discussed, as well as some peculiarities of RRS on surface optical phonons. From the experimentally observed small variation of the I-2LO/I-LO ratio for 2-5 nm NPs a minor effect of (d) over bar on the electron-phonon coupling strength in this (d) over bar range is supposed.

引用

页数：6

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