Band gap engineering and spatial confinement of optical phonon in ZnO quantum dots

被引：103

作者：

Lin, Kuo-Feng

Cheng, Hsin-Ming

Hsu, -Cheng Hsu

Hsieh, Wen-Feng

机构：

[1] Natl Chiao Tung Univ, Dept Photon, Inst Electroopt Engn, Hsinchu 30050, Taiwan

[2] Ind Technol Res Inst, Mat & Chem Res Labs, Hsinchu 310, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 26期

关键词：

D O I：

10.1063/1.2218775

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Both band gap engineering and spatial confinement of optical phonon were observed depending upon the size of ZnO quantum dots at room temperature. Size-dependent blueshifts of photoluminescence and absorption spectra reveal the quantum confinement effect. The measured Raman spectral shift and asymmetry for the E-2(high) mode caused by localization of optical phonons agree well with that calculated by using the modified spatial correlation model. (c) 2006 American Institute of Physics.

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页数：3

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