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RESEARCH PRODUCT
Efficient wide band gap double cation – double halide perovskite solar cells
Cristina MomblonaDávid ForgácsJorge ÁVilaHenk J. BolinkDaniel Pérez-del-reyLidón Gil-escrigBenedikt DänekampMichele Sessolosubject
Materials scienceChemical substanceTandemRenewable Energy Sustainability and the Environmentbusiness.industryBand gapWide-bandgap semiconductorHalideNanotechnology02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesOptoelectronicsGeneral Materials Science0210 nano-technologyScience technology and societybusinessStoichiometryPerovskite (structure)description
In this work we study the band gap variation and properties of the perovskite compound Cs0.15FA0.85Pb(BrxI1−x)3 as a function of the halide composition, with the aim of developing an efficient complementary absorber for MAPbI3 in all-perovskite tandem devices. We have found the perovskite stoichiometry Cs0.15FA0.85Pb(Br0.7I0.3)3 to be a promising candidate, thanks to its band gap of approximately 2 eV. Single junction devices using this perovskite absorber lead to a maximum PCE of 11.5%, among the highest reported for solar cells using perovskites with a band gap wider than 1.8 eV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | Journal of Materials Chemistry A |