A type-II GeSe/SnTe heterostructure with superior optical absorption and strain tunable photovoltaic propertiesJunxiang Zhao, Ziyan Yu, Jiawei Chen, Yupeng Su, Jiafu Wang and Niannian YuEur. Phys. J. Appl. Phys., 98 (2023) 52DOI: https://doi.org/10.1051/epjap/2023230029