Huanping Zhou1,2, Qi Chen1,2, Gang Li2, Song Luo1,2, Tze‐Bin Song1,2, Hsin-Sheng Duan1,2, Ziruo Hong2, Jingbi You2, Yongsheng Liu1,2, Yang Yang1,2
1California NANOSystems Institute, University of California, Los Angeles, CA 90095, USA.
2Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
Tóm tắt
A layered approach improves solar cells
Perovskite films received a boost in photovoltaic efficiency through controlled formation of charge-generating films and improved current transfer to the electrodes. Zhou
et al.
lowered the defect density of the film by controlling humidity while the perovskite film formed from lead chloride and methylammonium iodide. Low-temperature processing steps allowed the use of materials that draw current out of the perovskite layer more efficiently. These and other modifications enabled a maximum cell efficiency of just over 19% and an average of 16.6%.
Science
, this issue p.
542
