Robust photogalvanic effect in the armchair B2C4P2 photodetector by vacancy and substitution-doping Xi Fu, Jian Lin, Wenhu Liao, Jiyuan Guo and Xiaowu Li Eur. Phys. J. B, 97 1 (2024) 8 Published online: 18 January 2024 DOI: 10.1140/epjb/s10051-023-00632-w