Bandgap tuning of Mn-doped BiFeO3 thin films for photovoltaic applicationChokalingam Saravanan, P. Balaji Bhargav, N. Venkateswaran, Nafis Ahmed, K. Aravinth and Chandra BalajiEur. Phys. J. Appl. Phys., 98 (2023) 54DOI: https://doi.org/10.1051/epjap/2023230094