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Influence of surface structure on the phonon-assisted emission process in the ZnO nanowires grown on homoepitaxial films

Abstract:

We carried out temperature-dependent photoluminescence measurements to investigate the influence of surface roughness on the phonon-assisted emission of the surface-tailored ZnO nanowires (NWs). For the rough ZnO NWs, the observation of strong defect emission with vibration peaks by the exciton-phonon coupling reflects the presence of a high density of surface defects, resulting in a rapid shift to lower energy region of free exciton emission and a strong contribution of the first order phono...

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Publisher copy:
10.1063/1.3072349

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Journal:
Applied Physics Letters
Volume:
94
Issue:
4
Pages:
043103-043103
Publication date:
2009-01-01
DOI:
ISSN:
0003-6951
URN:
uuid:9e1531ab-580c-438a-81fd-5525377bda6b
Source identifiers:
389063
Local pid:
pubs:389063
Language:
English

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