Touafek, N. ., C. . Dridi, and R. . Mahamdi. “Bathocuproine Buffer Layer Effect on the Performance of Inverted Perovskite Solar Cells”. Journal of Technology Innovations in Renewable Energy, vol. 9, Dec. 2020, pp. 1-6, https://www.lifescienceglobal.com/pms/index.php/jtire/article/view/7107.