Journal
APPLIED PHYSICS LETTERS
Volume 85, Issue 25, Pages 6167-6169Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1840124
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The effect of arsenic doping on optical characteristics of ZnO nanowires was investigated by photoluminescence spectroscopy carried out at 13-290 K. In as-grown nanowires, emission due to acceptor-bound excitons predominated at low temperatures; as temperatures increased, emission due to recombination of free excitons prevailed. Arsenic-doped nanowires exhibited emission due to acceptor-bound excitons with no free exciton emission in the whole temperature range, indicating the formation of the acceptor level within the ZnO nanowire by arsenic doping. (C) 2004 American Institute of Physics.
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