Near-field ultraviolet photoluminescence spectroscopy for evaluating the crystallinity of polycrystalline zinc oxide

Yatsui, T.; Shimizu, T.; Yamamoto, Y.; Kourogi, M.; Ohtsu, M.; Lee, G. H.
October 2001
Applied Physics Letters;10/8/2001, Vol. 79 Issue 15, p2369
Academic Journal
By extending the optical near-field technique to the ultraviolet region, a two-dimensional evaluation of the optical properties and crystallinity of polycrystalline zinc oxide (ZnO) was carried out at room temperature. Using an ultraviolet fiber probe with an aperture diameter of 80 nm, we obtained spatially resolved photoluminescence spectra from individual ZnO nanocrystallites; the emission intensity depended on the topography and on crystal orientation. © 2001 American Institute of Physics.


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