Davis, Denet, and K.S. Sudheer. “Graphene Oxide and Reduced Graphene Oxide As Hole Transport Layers for Improved Efficiency in Fullerene-Based Bulk Heterojunction Organic Solar Cells: A Numerical Simulation Study ”. East European Journal of Physics, no. 1 (March 3, 2025): 217-232. Accessed April 1, 2025. https://periodicals.karazin.ua/eejp/article/view/24440.