Direct Conversion of CH3NH3PbI3 from Electrodeposited PbO for Highly Efficient Planar Perovskite Solar Cells.
Organic-inorganic hybrid perovskite materials have recently been identified as a promising light absorber for solar cells. In the efficient solar cells, the perovskite active layer has generally been fabricated by either vapor deposition or two-step sequential deposition process. Herein, electrochemically deposited PbO film is in situ converted into CH3NH3PbI3 through solid-state reaction with adjacent CH3NH3I layer, exhibiting a large-scale flat and uniform thin film with fully substrate coverage. The resultant planar heterojunction photovoltaic device yields a best power conversion efficiency of 14.59% and an average power conversion efficiency of 13.12 ± 1.08% under standard AM 1.5 conditions. This technique affords a facile and environment-friendly method for the fabrication of the perovskite based solar cells with high reproducibility, paving the way for the practical application.
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Jin-hua
JH
Huang
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Ke-jian
KJ
Jiang
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Xue-ping
XP
Cui
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Qian-qian
QQ
Zhang
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Meng
M
Gao
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Mei-ju
MJ
Su
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Lian-ming
LM
Yang
Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190, P. R. China.
Yanlin
Y
Song