“Efficient and stable solution-processed planar perovskite solar cells via contact passivation” (2017), by Hairen Tan et al. Engineering research paper. Original abstract below, unchanged. A free PDF is available.

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

Hairen Tan, Ankit Jain, Oleksandr Voznyy et al. · February 2, 2017 · Engineering

Abstract

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).

Free PDF DOI: 10.1126/science.aai9081