New efficiencies in solar photovoltaic cells have been found by a group of international joint teams who combined a layer of silicon with a layer of perovskite material in such a way that both sides generate electricity.
“Third generation” perovskite solar cells are already lower cost and highly efficient. The researchers were able to demonstrate that this “bifacial” solar cell configuration can generate more electricity, particularly in outdoor conditions where the cell can capture reflected and scattered light. The researchers used 14 different materials in the solar cell and had to optimise each one to achieve the best performance. Overall, the new bifacial solar cell has a power conversion efficiency of over 25% and a high power density of 26mW per sq cm.
This is also the first time that bifacial tandem installation has been clearly demonstrated experimentally. The research was published in Nature Energy.
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Reference
Design optimization of bifacial perovskite minimodules for improved efficiency and stability, and Efficient bifacial monolithic perovskite/silicon tandem solar cells via bandgap engineering, Nature Energy
Source
第三代太阳能电池效率显著提升 [Significantly improved efficiency of third-generation solar cells], 环球网[Huanqiu (“World Wide Web”)], 2023-03-24
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