期刊
APPLIED PHYSICS LETTERS
卷 95, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3211124
关键词
crystal growth from solution; II-VI semiconductors; nanofabrication; red shift; semiconductor growth; semiconductor nanotubes; whispering gallery modes; wide band gap semiconductors; zinc compounds
Highly oriented ZnO nanotubes were fabricated on a silicon substrate by aqueous chemical growth at low temperature (< 100 degrees C) by trimming of ZnO nanorods. The yield of nanotubes in the sample was 100%. Photoluminescence spectroscopy of the nanotubes reveals an enhanced and broadened ultraviolet (UV) emission peak, compared with the initial nanorods. This effect is attributed to whispering gallery mode resonance. In addition, a redshift of the UV emission peak is also observed. Enhancement in the deep defect band emission in the nanotubes compared to nanorods was also manifested as a result of the increased surface area.
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