The effect of acceptor dopant concentration of (Al3+) on optical properties of (SnO2) transparent conduting thin film

In this research, the influence of (Al) doping on optical properties of spray-pyrolysis deposited Sn02 films has been investigated. The new preparation conditions have been used for the first time in Iraq. The (Sn02:Al) films were deposited at a glass substrate temperature of (673 K). The result of (XRD) shows that the films were polycrystalline. The increase of (Al) doping reduce the energy gap which was obtained for direct allowed and forbidden transition and indirect allowed transition, it was found that the (Al) doping affected all the optical parameters under investigation