CH3NH3PbI3 perovskite / silicon tandem solar cells: Characterization based optical simulations

Miha Filipič, Philipp Löper, Bjoern Niesen, Stefaan De Wolf, Janez Krč, Christophe Ballif, Marko Topič

Research output: Contribution to journalArticlepeer-review

265 Scopus citations


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 (CH3NH3PbI3) 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 fourterminal 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.

Original languageEnglish (US)
Pages (from-to)A263-A278
JournalOptics Express
Issue number7
StatePublished - Apr 6 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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