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Synthesis and Sensing Properties of N-doped ZnO Nanorod Arrays on Quartz

Published online by Cambridge University Press:  01 February 2011

Boqian Yang
Affiliation:
yangsiom@yahoo.com, University of Puerto Rico, Rio Piedras, Physics department, PO Box 23343, San Juan, 00931, Puerto Rico
Xiaoyan Peng
Affiliation:
pengxy1980@gmail.com, University of Puerto Rico, Rio Piedras, Physics department, San Juan, Puerto Rico
Hongxin Zhang
Affiliation:
zhanghongxin727@yahoo.com, University of Puerto Rico, Rio Piedras, Physics department, San Juan, Puerto Rico
Peterxian Feng
Affiliation:
pfeng@cnnet.upr.edu, United States
Marc Achermann
Affiliation:
achermann@physics.umass.edu, University of Massachusetts, Physics, Amherst, Massachusetts, United States
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Abstract

Using different pressures of nitrogen, N-doped ZnO nanorod arrays of various densities have been synthesized on quartz substrates by pulsed laser deposition techniques. The nanorods grow preferentially perpendicular to the quartz surface. X-ray diffraction patterns revealed some degradation of the crystal structure at elevated nitrogen pressures. High concentrations of nitrogen doping in ZnO nanorods were estimated by X-ray photoelectron spectroscopy. Raman scattering spectra confirmed the wurtzite structure of N-doped ZnO nanorods. A prototype sensor based on the N-doped ZnO nanorod arrays demonstrates a linear dependence of the conductivity with operating temperature and pressure of a test gas pollutant.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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