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Synthesis and characterization of pulsed laser deposited ZnO nanorods

R .VINODKUMAR1,2,* , I. NAVAS2, N. V. UNNIKRISHNAN1, V. P. MAHADEVAN PILLAI2

Affiliation

  1. School of Pure and Applied Physics, Mahatma Gandhi University, Priyadarshini Hills P.O, Kottayam-686560. Kerala
  2. Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala, India – 695581

Abstract

Densily distributed ZnO nanorods have been grown by pulsed laser deposition by controlling the oxygen content during the nucleation and growth process. The XRD result suggests that ZnO nanorods are growing along the c axis and they are perpendicular to the surface of the substrate. Raman spectra of the as deposited ZnO nanorods support the XRD findings that the nanorod is of hexagonal wurtzite structure. AFM studies show that ZnO nanorods are densly distributed over the fused silica substrate. The transmittance of the nanorods are very high and the room-temperature photoluminescence measurements of these ZnO nanorods shown UV and visible emission. Electrical resistivity is very less compared to that of the bulk ZnO. The unique properties of ZnO nanorods may have a great potential in the application to the field-emission devices and nano-optics..

Keywords

Zinc oxide nanorods, Pulsed laser deposition, Micro-Raman spectra, Temperature dependent electrical resistivity studies.

Citation

R .VINODKUMAR, I. NAVAS, N. V. UNNIKRISHNAN, V. P. MAHADEVAN PILLAI, Synthesis and characterization of pulsed laser deposited ZnO nanorods, Optoelectronics and Advanced Materials - Rapid Communications, 6, 3-4, March-April 2012, pp.411-415 (2012).

Submitted at: Jan. 23, 2012

Accepted at: April 11, 2012