Journal
CERAMICS INTERNATIONAL
Volume 37, Issue 7, Pages 2723-2726Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2011.04.026
Keywords
SnO2; Co-doping; Solubility limit; Charge compensation; XPS
Categories
Funding
- Korean government (MEST) [2009-0093819, 2007-0056848, 2010-0001871, 2010-0001874]
- National Research Foundation of Korea [2007-0056848] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, the co-doping effect of ZnO and Sb2O5 on the solubility limit in SnO2 was investigated. When ZnO was added to SnO2, its solubility limit was around 3 at%, while that of Sb2O5 could not be evaluated due to the severe evaporation of Sb2O5 during sintering. For the co-doping of ZnO and Sb2O5, the ZnSb2O6 phase was used for the source of Zn and Sb dopants to prevent the evaporation of Sb2O5. When ZnO and Sb2O5 were co-doped by ZnSb2O6, the solubility limit expanded to 60 at%. XPS analysis of the Sb revealed that Sb5+ is stable when Zn is co-doped. The extended solubility limit is explained by electrostatic and strain energy minimization in the lattice. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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