标题: Size dependence of photoluminescence and resonant Raman scattering from ZnO quantum dots
作者: Cheng, HM
Lin, KF
Hsu, HC
Hsieh, WF
光电工程学系
Department of Photonics
公开日期: 26-六月-2006
摘要: ZnO quantum dots (QDs) of controlled sizes have been fabricated by a simple sol-gel method. The blueshift of room-temperature photoluminescence measurement from free exciton transition are observed decreasing with the QD size that is ascribed to the quantum confinement effect. From the resonant Raman scattering, the coupling strength between electron and longitudinal optical phonon, deduced from the ratio of the second- to the first-order Raman scattering intensity, diminishes with reducing the ZnO QD diameter. The size dependence of electron-phonon coupling is principally a result of the Frohlich interaction.
URI: http://dx.doi.org/10.1063/1.2217925
http://hdl.handle.net/11536/12129
ISSN: 0003-6951
DOI: 10.1063/1.2217925
期刊: APPLIED PHYSICS LETTERS
Volume: 88
Issue: 26
结束页: 
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