Direct imaging of the visible emission bands from individual ZnO nanowires by near-field optical spectroscopy.


Room-temperature photoluminescence (PL) measurements have been performed on single-crystal ZnO nanowires grown on SiO2/Si and quartz substrates by the vapor transport method using Au as a catalyst. Two emission bands are apparent, one in the UV spectral region around 380 nm (3.26 eV) associated with exciton recombination processes and a much broader… (More)
DOI: 10.1088/0957-4484/20/31/315701


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