| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| High Performance Perovskite/Silicon Tandem Solar Cells Based on 1, 4-Diaminobutane Dihydrochloride |
| HE Yongcai1,2, DING Lei2, YANG Ying2, LIU Jiang2, HE Bo2, ZHANG Yongzhe1, YAN Hui1,*, XU Xixiang2
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1 The Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
2 LONGi Central Research and Development Institute, LONGi Green Energy Technology Co., Ltd., Xi’an 710100, China |
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Abstract Perovskite/silicon heterojunction tandem solar cell has been regarded as a promising strategy to break the inherent Shockley-Queisser limit imposed on single-junction solar cells. However, the existence of defects within the multi-crystalline perovskite active layer would form additional recombination centers for photo-generated carriers, and bring about unfavorable losses to the performance of solar cells. Therefore, it is both necessary and significant to explore effective passivation approaches. In this work, we adopt 1, 4-diaminobutane dihydrochloride by mixing it into the perovskite precursor and found this could optimize the performance of monolithic perovskite/silicon tandem solar cells. Ultimately, the synergistic effects contributed by the component chloride ion and diaminobutane of 1, 4-diaminobutane dihydrochloride improve both the open-circuit voltage and fill factor, and this help us to achieve a certified PCE of 28.77% by NREL.
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Published: 25 October 2024
Online: 2024-11-05
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| Fund:National Natural Science Foundation of China (62034001). |
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2024, Vol. 38 
