Role of substrate temperature on the properties of Na-doped ZnO thin film nanorods and performance of ammonia gas sensors using nebulizer spray pyrolysis technique

Mariappan, R and Ponnuswamy, V and Suresh, R and Suresh, P and Bose, Chandra A and Ragavendar, M (2013) Role of substrate temperature on the properties of Na-doped ZnO thin film nanorods and performance of ammonia gas sensors using nebulizer spray pyrolysis technique. In: JOURNAL OF ALLOYS AND COMPOUNDS, 582 . pp. 387-391.

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Abstract

Sodium doped zinc oxide (Na:ZnO) thin films were deposited on glass substrates at substrate temperatures 300,400 and 500 degrees C by a novel nebulizer spray method. X-ray diffraction shows that all the films are polycrystalline in nature having hexagonal structure with high preferential orientation along (0 0 2) plane. High resolution SEM studies reveal the formation of Na-doped ZnO films having uniformly distributed nano-rods over the entire surface of the substrates at 400 degrees C. The complex impedance of the ZnO nano-rods shows two distinguished semicircles and the diameter of the arcs got decreased in diameter as the temperature increases from 170 to 270 degrees C and thereafter slightly increased. (c) 2013 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF ALLOYS AND COMPOUNDS
Publisher:	ELSEVIER SCIENCE SA
Additional Information:	copyright for this article belongs to Publisher
Keywords:	Nebulizer spray pyrolysis; X-ray diffraction; Impedance analysis; Ammonia sensing properties
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	16 Nov 2013 13:51
Last Modified:	16 Nov 2013 13:54
URI:	http://eprints.iisc.ac.in/id/eprint/47760

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