Proceedings of Online International Conference on Hybrid and Organic Photovoltaics (OnlineHOPV20)
DOI: https://doi.org/10.29363/nanoge.onlinehopv.2020.017
Publication date: 22nd May 2020
Over the past few years, organic–inorganic hybrid perovskites have attracted significantly attention as light absorbers in efficient photovoltaics. While impressive power conversion efficiencies exceeding 25% have been attained within a period of only a few years, concerns have been raised about the viability of this class of photovoltaics as a scalable and long-term reliable energy source. In our group the printable perovskite solar cells were developed with triple mesoscopic layers1. The conjugated or non-conjugated bifunctional molecules were introduced into the perovskite materials to enhance their stability and efficiency2. The results indicated that the triple mesoscopic structure and functional molecular shows a very important role in the inhibition of ionic migration and material decomposition. The fully printable mesoscopic perovskite solar cell presents no obvious decay within over 8000h light soaking and high certified efficiency of more than 18%. WThe crystals of the perovskite films are reconstructed by post-treating with methylamine gas and allows the regeneration of the photodegraded PSCs via the crystal reconstruction and the PCE can recover to 91% of the initial value after two cycles of the photodegradation-recovery process. Meanwhile, the characterization of the mesoscopic perovskite solar cells under the UV light soaking condition was performed. A 110 m2 mesoscopic perovskite solar system3,4 was exhibited. These results offer a promising prospect for its commercial application.
References
(1) Z. L. Ku, Y. G. Rong, M. Xu, T. F. Liu, H. W. Han, Full Printable Processed Mesoscopic CH3NH3PbI3/TiO2 Heterojunction Solar Cells with Carbon Counter Electrode, Scientific Reports 2013, 3, 3132.
(2) A. Y. Mei, X. Li, L. F. Liu, Z. L. Ku, T. F. Liu, Y. G. Rong, M. Xu, M. Hu, J. Z. Chen, Y. Yang, M. Gratzel, H. W. Han, A hole-conductor-free, fully printable mesoscopic perovskite solar cell with high stability, Science 2014, 345, 295.
(3) Yaoguang Rong, Yue Hu, Anyi Mei, Hairen Tan, Makhsud I. Saidaminov, Sang Il Seok, Michael D. McGehee, Edward H. Sargent, Hongwei Han, Challenges for commercializing perovskite solar cells, Science 2018, 361,
(4) Yue Hu, Yanmeng Chu, Qifei Wang, Zhihui Zhang, Yue Ming, Anyi Mei, Yaoguang Rong, Hongwei Han, Standardizing Perovskite Solar Modules beyond Cells, Joule 2019, 3, 2076.
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