TIN-DOPED INDIUM OXIDE POWDER

PROBLEM TO BE SOLVED: To provide a transparent conductive powder exhibiting higher conductivity in a high transparency region, and to provide a suitable manufacturing method thereof not needing calcination treatment in a strong reducing atmosphere as in the past. SOLUTION: The tin-doped indium oxide powder comprises powder having an Sn content of 0.1 to 30 wt.% in terms of SnO2, a specific surface area of 15 m2/g or more, and grain sizes ranging from 10 to 30 nm, and exhibits a specified color tone, crystallinity, volume resistivity, and zeta-potential. Moreover, in the manufacturing method, a bivalent soluble tin compound, in particular, is used for a starting tin material for doping, an ammonium carbonate is added to a mixed acidic liquid of the tin compound and an indium compound and mixed, thereby obtaining a coprecipitation hydroxide, which is calcinated in a nitrogen atmosphere while humidity is adjusted, and the calcinated material is pulverized to obtain powder. COPYRIGHT: (C)2008,JPO&INPIT