Single crystalline antimony-doped SnO2 whiskers (0.025-0.25 at% Sb) have been synthesized by in situ doping process in horizontal flow reactor. Antimony introduction results in whisker morphology change. Antimony allows to control the resistivity and band gap of SnO2. The whiskers present high transmittance in visible region being suitable for several applications where good transparency and conductivity is necessary. (C) 2009 Elsevier B.V. All rights reserved.