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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/7243
Title: Tailoring the luminescence emission of ZnO nanostructures by hydrothermal post-treatment in water
Authors: Yao, Baodian
Feng, Lin
Cheng, Chun
Loy, Michael M.
Wang, Ning
Keywords: II-VI semiconductors
Nanorods
Nanowires
Paramagnetic resonance
Photoluminescence
Point defects
Semiconductor quantum wires
Wide band gap semiconductors
zinc compounds
Issue Date: 2-Jun-2010
Citation: Applied physics letters, v. 96, 223105 (2010)
Abstract: ZnO nanorods and nanowires fabricated from solution methods exhibit poor optical properties. Using hydrothermal post-treatment in pure water, the green emission can be significantly suppressed at 250℃ and completely eliminated at 350℃. Meanwhile, the near-band-edge UV radiative recombination efficiency is greatly improved and the UV emission intensity is increased up to 50 times. The morphology and structure of the ZnO nanostructures remain intact after the treatment. As evidenced by the electron paramagnetic resonance investigation, this simple treatment can completely remove or passivate the point defects responsible for the green emission of as-grown ZnO.
Rights: Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at http://apl.aip.org/
URI: http://hdl.handle.net/1783.1/7243
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