Lead-free, formamidinium germanium-antimony halide (FA₄GeSbCl₁₂) double perovskite solar cells: the effects of band offsets.

ABSTRACT: Double halide perovskites have received massive attention due to their low toxicity, tunable bandgap, structural flexibility, and stability as compared to conventional 3D lead halide perovskites. Particularly, newly discovered formamidinium germanium-antimony halide (FA₄GeSbCl₁₂) double perovskites offer an excellent bandgap (∼1.3 eV) for solar cell (SC) applications. Therefore, in this study, for the first time, we have simulated FTO/TiO₂/FA₄GeSbCl₁₂/Cu₂O/Au planar SCs using SCAPS-1D, showing a maximum power conversion efficiency of 22.5% with J_sc = 34.52 mA cm^-2, V_oc = 0.76 V, and FF = 85.1%. The results show that the variation in valence and conduction band offsets (-0.4 to +

SUBMITTER: Sekar K 

PROVIDER: S-EPMC10450393 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature