Abstract: Based on the measurement and analysis of carier concentration n_e, mobility μ_e, electrical resistivity ρ, film thickness d,
refractive index n, transmittance T(λ) and reflectivity R(λ) in ultraviolet-visible range, the eletrical and optical behaviours of Sb-doped SnO₂ thin films derived
by sol-gel processing were investigated. The experimental data show that the SnO₂ thin films derived by the sol-gel processing have favourable electrical
conductivity and transmittance in visible light range, in which n-type carrier concentration n_e reachs to 10²⁰cm^-3, electrical resistivity
ρ～10^-2Ω．cm, transmittance T～90%, as well as forbiden band gap E_g=3.7～3.8eV.

Key words: Sb-doped SnO₂ thin films, conductivity measurements, transmittance and reflectivity