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Synthesis of Cubic and Rhombohedral Phased Nanocrystalline SnO2 Doped In2O3 [ITO] Powders with Coprecipitation Method

Published online by Cambridge University Press:  21 February 2011

Bong-Chull Kim ,
Jeong-Joo Kim  and
Se-Hong Chang
Bong-Chull Kim
Affiliation:
Dept. of Inorganic Materials Engineering, Kyungpook Nat'l Univ., Taegu 702-701, KOREA
Jeong-Joo Kim
Affiliation:
Dept. of Inorganic Materials Engineering, Kyungpook Nat'l Univ., Taegu 702-701, KOREA
Se-Hong Chang
Affiliation:
KETI, PyungTeak 451-860, KOREA
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Abstract

Nanocrystalline ITO powders have been prepared by a hydroxide coprecipitation method. Through the variation of aging time after precipitation, we have characterized the size, morphology and the structure of the precipitates. It was found that the precipitates are in the state of InOOH at first. Further aging up to 48 h changed it to In(OH)3 structure. After calcinations of the precipitates, rhombohedral nanocrystalline ITO powder with spherical shape was produced from InOOH structured precipitates, while cubic nanocrystalline ITO powder was produced from In(OH)3. Fraction of the rhombohedral ITO powder decreased as the aging time increased. The particle size of the cubic ITO increased with aging time but that of rhombohedral ITO (∼15 nm) was almost invariant.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 27
Copyright
Copyright © Materials Research Society 2000

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References

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