title: CH(3)NH(3)PbI(3) perovskite / silicon tandem solar cells: characterization based optical simulations.
abstract: In this study we analyze and discuss the optical properties of various tandem architectures: mechanically stacked (four-terminal) and monolithically integrated (two-terminal) tandem devices, consisting of a methyl ammonium lead triiodide (CH(3)NH(3)PbI(3)) perovskite top solar cell and a crystalline silicon bottom solar cell. We provide layer thickness optimization guidelines and give estimates of the maximum tandem efficiencies based on state-of-the-art sub cells. We use experimental complex refractive index spectra for all involved materials as input data for an in-house developed optical simulator CROWM. Our characterization based simulations forecast that with optimized layer thicknesses the four-terminal configuration enables efficiencies over 30%, well above the current single-junction crystalline silicon cell record of 25.6%. Efficiencies over 30% can also be achieved with a two-terminal monolithic integration of the sub-cells, combined with proper selection of layer thicknesses.
authors.forename: Miha
authors.initials: M
authors.lastname: Filipič
authors.forename: Philipp
authors.initials: P
authors.lastname: Löper
authors.forename: Bjoern
authors.initials: B
authors.lastname: Niesen
authors.forename: Stefaan
authors.initials: S
authors.lastname: De Wolf
authors.forename: Janez
authors.initials: J
authors.lastname: Krč
authors.forename: Christophe
authors.initials: C
authors.lastname: Ballif
authors.forename: Marko
authors.initials: M
authors.lastname: Topič