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Tailoring the luminescence emission of ZnO nanostructures by hydrothermal post-treatment in water

Authors Yao, Baodian HKUST affiliated (currently or previously)
Feng, Lin HKUST affiliated (currently or previously)
Cheng, Chun HKUST affiliated (currently or previously)
Loy, Michael M.T. View this author's profile
Wang, Ning View this author's profile
Issue Date 2010
Source Applied physics letters , v. 96, (22), 2010, MAY 31, article number 223105
Summary 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 degrees C and completely eliminated at 350 degrees C. 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. (C) 2010 American Institute of Physics. [doi:10.1063/1.3443636]
ISSN 0003-6951
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
Language English
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