Hasan, M. M., S. A. Rahman, M. M. H. Prodhan, and A. H. Talukder. “Absorption Enhancement of Organic Solar Cell Using Aluminum Oxide As a Photonic Crystal”. Journal of Bangladesh Academy of Sciences, vol. 42, no. 1, Aug. 2018, pp. 87-97, doi:10.3329/jbas.v42i1.37835.