“A Numerical Simulation Study Investigating the Functionality of a Perovskite Solar Cell Based on FASnI3 in Both Conventional and Inverted Configurations Using Compatible Zn(O0.3S0.7) as the Electron Transport Layer” (2026) East European Journal of Physics, (2), pp. 292–301. doi:10.26565/2312-4334-2026-2-31.