Efficient Monolithic Perovskite/Silicon Tandem Solar Cell with Cell Area >1 cm 2

Monolithic perovskite/crystalline silicon tandem solar cells hold great promise for further performance improvement of well-established silicon photovoltaics; however, monolithic tandem integration is challenging, evidenced by the modest performances and small-area devices reported so far. Here we present first a low-temperature process for semitransparent perovskite solar cells, yielding efficiencies of up to 14.5%. Then, we implement this process to fabricate monolithic perovskite/silicon heterojunction tandem solar cells yielding efficiencies of up to 21.2 and 19.2% for cell areas of 0.17 and 1.22 cm(2), respectively. Both efficiencies are well above those of the involved subcells. These single-junction…

• SN
  Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
• BF
  Bundesamt für Energie

  Award: SI/501072-01