Excitonic polaron and phonon assisted photoluminescence of ZnO nanowires

標題:	Excitonic polaron and phonon assisted photoluminescence of ZnO nanowires
作者:	Hsu, HC Hsieh, WF 光電工程學系 Department of Photonics
關鍵字:	nanostructure;optical properties;photoluminescence
公開日期:	1-八月-2004
摘要:	The coupling strength of the radiative transition of hexagonal ZnO nanowires to the longitudinal optic (LO) phonon polarization field is deduced from temperature dependent photoluminescence spectra. An excitonic polaron formation is discussed to explain why the interaction of free excitons with LO phonons in ZnO nanowires is much stronger than that of bound excitons with LO phonons. The strong exciton-phonon coupling in ZnO nanowires affects not only the Haung-Ray S factor but also the FXA-ILO phonon energy spacing, which can be explained by the excitonic polaron formation. (C) 2004 Elsevier Ltd. All rights reserved.
URI:	http://dx.doi.org/10.1016/j.ssc.2004.05.043 http://hdl.handle.net/11536/26534
ISSN:	0038-1098
DOI:	10.1016/j.ssc.2004.05.043
期刊:	SOLID STATE COMMUNICATIONS
Volume:	131
Issue:	6
起始頁:	371
結束頁:	375
顯示於類別：	期刊論文

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