Tuning the transport and thermoelectric properties of In2O3 bulk ceramics through doping at In-site

Autor:	Ch. Simon, A. Maignan, F. Delorme, D. Ovono Ovono, David Berardan, B. Raveau, Emmanuel Guilmeau
Rok vydání:	2009
Předmět:	Valence (chemistry) Materials science business.industry Doping Niobium Analytical chemistry General Physics and Astronomy chemistry.chemical_element Semiconductor chemistry Electrical resistivity and conductivity Seebeck coefficient Thermoelectric effect Tin business
Zdroj:	Journal of Applied Physics. 106:053715
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.3197064
Popis:	Bulk ceramics In2−xMxO3, with a metal-like behavior, have been synthesized in air for M=Ti4+, Zr4+, Sn4+, Ta5+, and Nb5+, with rather low solubility limits xl, ranging from 0.01 to 0.1. An abrupt increase in the electrical conductivity and of the carrier concentration with x is observed in the monophasic region (x xl) these values do not vary significantly. These results show that the valence of the doping element plays a crucial role in such properties, similar to degenerated semiconductors. Similarly, the thermopower |S| value is correlated with this evolution decreasing as x increases for x
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::827a3c00c2529d5d3fb6739ff472e3ca https://doi.org/10.1063/1.3197064 Zobrazit plný text záznamu