Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
DOI: https://doi.org/10.29363/nanoge.iperop.2019.065
Publication date: 23rd October 2018
Perovskite solar cells have shown impressive power conversion efficiency (PCE) over the last five years. To reduce the cost and overcome the Shockley-Queisser limit of the single junction solar cells, the tandem structure becomes an emerging technology. In this study, organic/perovskite two-terminal hybrid tandem solar cells, which made from an organic solar cell of P3HT:ICBA and the state-of-the-art perovskite solar cell of MAPbI3, were successfully air fabricated. The perovskite sub-cell and organic sub-cells are made from solution-processed method. An open circuit voltage (VOC) of 1.7 V of tandem solar cells is achieved, which sums the VOC of organic and perovskite sub-cells, 0.8 V and 0.9 V respectively. The current-voltage hysteresis of hybrid tandem solar cells mainly comes from the perovskite sub-cell, while that of organic sub-cells is zero. It was greatly suppressed by a modified interface of ZnO and perovskite layers with a buffer layer of PCBM. The results offer a facile and attractive way to the cost-efficient organic/perovskite tandem solar cells.
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