Numerical optimization of TiO₂/SnO₂ bilayer electron transport layers for enhanced perovskite solar cell performance.

ABSTRACT: To improve charge extraction and address UV-induced degradation in perovskite solar cells, we propose and numerically evaluate a TiO₂/SnO₂ bilayer electron transport layer (ETL) architecture. Using physics-based simulation, we systematically analyze the influence of individual and combined ETL thicknesses on key parameters. The results identify an optimal configuration of 100 nm TiO₂ and 20 nm SnO₂, which minimizes interfacial recombination and enhances electron transport. Furthermore, CH₃NH₃SnI₃ is employed as a lead-free absorber layer. Simulation results demonstrate a notable efficiency improvement upto 20.80%. The experimental results verified that the bi-layer Sn-based perovskite can achieve a conversion effi

SUBMITTER: Ma H 

PROVIDER: S-EPMC12436251 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature