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

“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.

- Authors: Hairen Tan, Ankit Jain, Oleksandr Voznyy, Xinzheng Lan, Francisco Pelayo García de Arquer, James Zhangming Fan, Rafael Quintero‐Bermudez, Mingjian Yuan, Bo Zhang, Yicheng Zhao et al.
- Published: February 2, 2017
- Field: Engineering
- DOI: https://doi.org/10.1126/science.aai9081
- Free PDF: https://utoronto.scholaris.ca/bitstreams/1dcc5ae7-6559-4de2-a0f1-e19ab008a068/download

## 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).

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