Efficient and stable solution-processed planar perovskite solar cells via contact passivation

Colloidal nanocrystal film that mitigates interfacial recombination and improves interface binding in low-temperature planar solar cells. We fabricated solar cells with certified efficiencies of 20.1 and 19.5% for active areas of 0.049 and 1.1 square centimeters, respectively, achieved via low-temperature solution processing. Solar cells with efficiency greater than 20% retained 90% (97% after dark recovery) of their initial performance after 500 hours of continuous room-temperature operation at their maximum power point under 1-sun illumination (where 1 sun is defined as the standard illumination at AM1.5, or 1 kilowatt/square meter).

• NO
  Nederlandse Organisatie voor Wetenschappelijk Onderzoek

  Award: 680-50-1511
• UO
  University of Toronto
• KA
  King Abdullah University of Science and Technology

  Award: KUS-11-009-21
• NS
  Natural Sciences and Engineering Research Council of Canada