Enhancement of the performance of CdS/CdTe heterojunction solar cell using TiO2/ZnO bi-layer ARC and V2O5 BSF layers: A simulation approachAbdul Kuddus, Md. Ferdous Rahman, Jaker Hossain and Abu Bakar Md. IsmailEur. Phys. J. Appl. Phys., 92 2 (2020) 20901DOI: https://doi.org/10.1051/epjap/2020200213