Synthesis and Electrical Characterization of the Polymorphic Indium Tin Oxide Nanocrystalline Powders

Authors: Seo, Kyung-Han1; Lee, Joon-Hyung1; Kim, Jeong-Joo1; Bertoni, M. I.2; Ingram, B. J.2; Mason, T. O.2

Source: Journal of the American Ceramic Society, Volume 89, Number 11, November 2006 , pp. 3431-3436(6)

Publisher: Blackwell Publishing

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Abstract:

Nanocrystalline powders of two indium tin oxide (ITO) polymorphs—rhombohedral and cubic—were prepared by a co-precipitation process. The temperature and aging time of precipitates after co-precipitation were controlled to obtain selectively the two different crystal structures. X-ray diffraction and transmission electron microscopy were used to characterize the powders. The electrical conductivity of the two ITO powders was determined by the powder solution composite method. The conductivities obtained were 0.26±0.04 and 0.65±0.17 S/cm for the rhombohedral and cubic ITO samples, respectively, the first such report for the rhombohedral phase.

Document Type: Research article

DOI: 10.1111/j.1551-2916.2006.01254.x

Affiliations: 1: Department of Inorganic Materials Engineering, Kyungpook National University, Daegu 702-701, Korea 2: Department of Materials Science and Engineering, Materials Research Center, Northwestern University, Evanston, Illinois 60208

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