Sahli, FlorentWerner, JeremieKamino, Brett A.Bräuninger, MatthiasYang, Terry Chien-JenFiala, PeterNogay, GizemFu, FanMonnard, RaphaelWalter, ArnaudMoon, Soo-JinRucavado, EstebanBarraud, LorisPaviet-Salomon, BertrandAllebe, ChristopheDing, LauraLeon, Juan J. DiazSacchetto, DavideCattaneo, GianlucaMorales-Masis, MonicaBoccard, MathieuDespeisse, MatthieuNicolay, SylvainJeangros, QuentinNiesen, BjoernBallif, Christophe2019-06-192019-06-192019-06-192018-01-0110.1109/PVSC.2018.8547435https://infoscience.epfl.ch/handle/20.500.14299/158242WOS:000469200403140Tandem solar cells that feature a high-bandgap perovskite cell on top of a lower bandgap silicon cell have the potential to reach efficiencies > 30%. Here, we present a versatile hybrid deposition method that yields conformal perovskite cells directly on textured silicon bottom cells, a prerequisite to achieve highest photocurrents and hence efficiencies. Furthermore, this low-temperature evaporation/spin-coating 2-step method produces high-quality perovskite materials with different bandgaps, here varied in the range of 1.5 eV to 1.8 eV. This flexibility enables the fabrication of monolithic 2-terminal perovskite/textured Si tandems that feature high photocurrents of about 19.5 mA/cm(2).hybrid organic-inorganic perovskitesmonolithic tandem cellsmultijunction solar cellssilicon heterojunction solar cellstext::conference output::conference proceedings::conference paper