Highly oriented ZnO nanotubes were fabricated on a silicon substrate by aqueous chemical growth at low temperature (<100 °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. © 2009 American Institute of Physics.
CITATION STYLE
Israr, M. Q., Sadaf, J. R., Yang, L. L., Nur, O., Willander, M., Palisaitis, J., & Persson, P. O. Å. (2009). Trimming of aqueous chemically grown ZnO nanorods into ZnO nanotubes and their comparative optical properties. Applied Physics Letters, 95(7). https://doi.org/10.1063/1.3211124
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