Affordable and sustainable new generation of solar cells: calcium titanate (CaTiO3) - based perovskite solar cellsAlfonsina Abat Amelenan Torimtubun, Anniza Cornelia Augusty, Eka Maulana and Lusi ErnawatiE3S Web Conf., 67 (2018) 01010DOI: https://doi.org/10.1051/e3sconf/20186701010