Mustafa, Haveen A., et al. “The Effects Of N-GaAs Substrate Orientations on The Electrical Performance of PANI N-GaAs Hybrid Solar Cell Devices”. Science Journal of University of Zakho, vol. 8, no. 4, Dec. 2020, pp. 149-53, https://doi.org/10.25271/sjuoz.2020.8.4.773.