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Shape Selective Growth Of ZnO Nanostructures: Spectral And Electrochemical Response

A.K. Srivastava, M. Deepa, K.N. Sood, E. Erdem, R.-A.Eichel

Volume 2, Issue 2, Page 142-147 | DOI: 10.5185/amlett.2011.1201

Keywords:

Nanostructures; oxides; electron microscopy; spectroscopy; electrochemical measurements

Abstract: 

Novel growth morphologies of sharp needle-shaped tetrapods and coexistent tetrapods and nanowires of ZnO have been prepared by sublimation of pure Zn utilizing a simple solid – catalyst free - vapour mechanism at the temperatures of 950 and 1100 ºC, respectively. These striking differences in these microscopic objects, which evolved at two different process temperatures, were deduced from electron paramagnetic resonance and Raman spectra thereby revealing the role of microstructures, defects and oxygen vacancies in ZnO at lattice scale, which are receptive for luminescence, and electrochemical activity of this functional oxide. Copyright © 2011 VBRI press.

 

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