Electrical conductivity, mobility and carrier concentration in Nb2O5 films: effect of NH4OH molarity

Abstract

This work presents the effect of NH4OH molarities on the electrical characteristics of Nb2O5 films prepared using the precipitation method. Hall Effect measurements proved the formation of n-type Nb2O5 films. The carrier concentration was found to increase with ammonium hydroxide molarities up to 12mol/L, while the carrier mobility decreased. Resistivity-temperature measurements confirm the semiconductor behaviors of the thin films. It also shows a decrease in the resistivity and activation energy with molarity increasing reaching its minimum value in 12 mol /L then they increased again.