Surface Passivation for Efficient Bifacial HTL-free Perovskite Solar Cells with SWCNT Top Electrodes
Aly Elakshar1, Sergey Tsarev1, Pramod Mulbagal Rajanna1, Marina Tepliakova1, Lyubov Frolova3, Yuriy G. Gladush1, Sergey M. Aldoshin3, Pavel A. Troshin3, and Albert G. Nasibulin1,2
1 Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow 143026, Russian Federation
2 Aalto University, School of Chemical Engineering, Kemistintie 1, 02015 Espoo, Finland
3 The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Academician Semenov Prospect 1, Chernogolovka 141432, Russian Federation
Abstract
Building-integrated photovoltaics is an emerging field that demands approaches to deliver efficient and flexible photovoltaic cells at a low cost. In this work, high-quality single-walled carbon nanotube (SWCNT) films were utilized as an electrode for the hole-transport-layer (HTL)-free perovskite solar cells using a methodology compatible with scalable low-temperature roll-to-roll fabrication. We report a simple passivation strategy of the perovskite/SWCNT interface using methylammonium iodide, which dramatically enhances the performance of the cells, delivering power conversion efficiencies of up to 16.7%. We believe that the device configuration presented here will facilitate the development of a generation of bifacial perovskite solar cells for integrated photovoltaics and tandems.
Speaker
Aly Elakshar
Skolkovo institute for science and technology
Russia
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