Fully Printable Mesoscopic Perovskite Solar Cells with Organic Silane Self-Assembled Monolayer
Linfeng Liu(Huazhong University of Science and Technology), Anyi Mei(Wuhan National Laboratory for Optoelectronics), Tongfa Liu(Huazhong University of Science and Technology), Pei Jiang(Huazhong University of Science and Technology), Yusong Sheng(Wuhan National Laboratory for Optoelectronics), Lijun Zhang(Huazhong University of Science and Technology), Hongwei Han(Huazhong University of Science and Technology)
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Abstract
By the introduction of an organic silane self-assembled monolayer, an interface-engineering approach is demonstrated for hole-conductor-free, fully printable mesoscopic perovskite solar cells based on a carbon counter electrode. The self-assembled silane monolayer is incorporated between the TiO2 and CH3NH3PbI3, resulting in optimized interface band alignments and enhanced charge lifetime. The average power conversion efficiency is improved from 9.6% to 11.7%, with a highest efficiency of 12.7%, for this low-cost perovskite solar cell.
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