Improved Efficiency and Stability in Inverted-Structure Solar Cells with Lead-Free All-Inorganic Halide Perovskite CsSn_1-<i>x</i>Zn<i>_x</i>Br₃.

ABSTRACT: We report the fabrication of an inverted structure solar cell with all-inorganic lead-free perovskite CsSn_1-xZn_xBr₃ alloy thin films grown by physical vapor codeposition of CsBr, SnBr₂, and ZnBr₂. It was found that the deposited CsSn_1-xZn_xBr₃ perovskite alloy thin films exhibited improved morphological characteristics (larger grain sizes, lower pinhole density, and improved flatness) compared to the CsSnBr₃ thin film. The incorporation of 4% Zn (CsSn_0.96Zn_0.04Br₃, abbreviated as 4Zn) resulted in a bandgap narrowing of ∼20 meV compared to CsSnBr₃ with the upshift of the valence band maximum and conduction band minimum of ∼

SUBMITTER: Jung H 

PROVIDER: S-EPMC11913019 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature