Hairen Tan1, Ankit Jain1, Oleksandr Voznyy1, Xinzheng Lan1, F. Pelayo Garcı́a de Arquer1, James Z. Fan1, Rafael Quintero‐Bermudez1, Mingjian Yuan1, Bo Zhang1, Yicheng Zhao1, Fengjia Fan1, Peicheng Li2, Li Na Quan1, Yongbiao Zhao2, Zheng‐Hong Lu2, Zhenyu Yang1, Sjoerd Hoogland1, Edward H. Sargent1
1Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario M5S 1A4, Canada.
2Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario, M5S 3E4, Canada
Tóm tắt
Passivating traps in perovskites
Low-temperature processing of planar organic-inorganic perovskite solar cells made through solution processing would allow for simpler manufacturing and the use of flexible substrates. However, materials currently in use form interfaces with charge carrier trap states that limit performance. Tan
et al.
used chlorine-capped TiO
2
colloidal nanocrystal films as an electron-selective layer, which limited interface recombination in solution-processed solar cells. Such cells achieved certified efficiencies of 19.5% for active areas of 1.1 cm
2
.
Science
, this issue p.
722
