Relaxed Current Matching Requirements in Highly Luminescent Perovskite Tandem Solar Cells and Their Fundamental Efficiency Limits

  title={Relaxed Current Matching Requirements in Highly Luminescent Perovskite Tandem Solar Cells and Their Fundamental Efficiency Limits},
  author={Alan R. Bowman and Felix Lang and Yu-Hsien Chiang and Alberto Jim{\'e}nez‐Solano and Kyle Frohna and Giles E. Eperon and Edoardo Ruggeri and Mojtaba Abdi‐Jalebi and Miguel Anaya and Bettina V. Lotsch and Samuel D. Stranks},
  journal={ACS Energy Letters},
  pages={612 - 620}
Perovskite-based tandem solar cells are of increasing interest as they approach commercialization. Here we use experimental parameters from optical spectroscopy measurements to calculate the limiting efficiency of perovskite–silicon and all-perovskite two-terminal tandems, employing currently available bandgap materials, as 42.0% and 40.8%, respectively. We show luminescence coupling between subcells (the optical transfer of photons from the high-bandgap to low-bandgap subcell) relaxes current… Expand
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