Abstract
Antimony-doped tin oxide (ATO) nanorods with tetragonal rutile structure were obtained by calcining coprecipitated precursors with sodium metasilicate nonahydrate and sodium chloride. The as-prepared ATO crystals displayed a rod-like shape. With the increase of Sb-doping concentration, the amount of nanorods decreased and the length of the rod got shorter, while the diameter changed little. When the doping amount reached at n(Sb)/n(Sn)=5%, the nanorods became quite small (ca. 9nm in diameter, ca. 25nm in length). The effect of Sb doping content on the electrical resistivity was also investigated. The electrical resistivity of ATO nanopowders shows a significant decrease just only adding a small amount of Sb doping content. When the Sb doping content reached 5mol%, the minimum electrical resistivity (0.8Ω·cm) was obtained.
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