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RESEARCH PRODUCT
FAPb0.5Sn0.5I3: A Narrow Bandgap Perovskite Synthesized through Evaporation Methods for Solar Cell Applications
Henk J. BolinkPablo P. BoixJorge ÁVilaAna M. Igual-muñozsubject
Materials sciencebusiness.industryBand gapchemistry.chemical_elementEnergy Engineering and Power TechnologyEvaporation (deposition)Atomic and Molecular Physics and Opticslaw.inventionElectronic Optical and Magnetic MaterialsVacuum depositionchemistrylawPhotovoltaicsSolar cellOptoelectronicsElectrical and Electronic EngineeringTinbusinessMaterialsCèl·lules fotoelèctriquesPerovskite (structure)description
The tunability of the optoelectrical properties upon compositional modification is a key characteristic of metal halide perovskites. In particular, bandgaps narrower than those in conventional lead‐based perovskites are essential to achieve the theoretical efficiency limit of single‐absorber solar cells, as well as develop multijunction tandem devices. Herein, the solvent‐free vacuum deposition of a narrow bandgap perovskite based on tin-lead metal and formamidinium cation is reported. Pinhole‐free films with 1.28 eV bandgap are obtained by thermal codeposition of precursors. The optoelectrical quality of these films is demonstrated by their use in solar cells with a power conversion efficiency of 13.98%.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |