SanniD. M., JosephE., and AdamuM. A. “THE IMPORTANCE OF FILM THICKNESS ON THE PHOTOVOLTAIC PERFORMANCE OF PEROVSKITE SOLAR CELLS”. FUDMA JOURNAL OF SCIENCES, Vol. 4, no. 1, Apr. 2020, pp. 600 -6, https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/87.