Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3284654
Keywords
excitons; fine structure; indium compounds; nanofabrication; nanowires; photoluminescence; scanning electron microscopy; semiconductor materials; transmission electron microscopy; ultraviolet spectra; X-ray diffraction
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Funding
- Singapore National Research Foundation [RCA-08/018]
- MOE [RG40/07]
- Science Development Planning and Department of Education of Jilin Province [20090139, 20070519, 20080296, 20080297]
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We report the ultraviolet light emission from ultrathin indium oxide (In(2)O(3)) nanowires fabricated by the vapor-liquid-solid method. The high crystalline quality of the samples is confirmed by using x-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Strong ultraviolet light emission is consistently observed in the temperature dependent photoluminescence measurements carried out between 10 and 300 K. Emissions related to free excitons and bound exciton complexes, donor-acceptor pair transition and its relevant longitudinal optical phonon replicas are identified and their temperature-dependent evolution is discussed in details.
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