期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 12, 期 3, 页码 929-937出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ee02575d
关键词
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资金
- Foundation for Innovation Research Groups of the National Natural Science Foundation of China (NSFC) [61421002]
- National key research and development program [2018YFB0407100-02]
- NSFC [21674093, 21722404, 6117703261675041, 21372168]
- Project of Science and Technology of Sichuan Province [2016HH0027]
- Fundamental Research Funds for the Central Universities [ZYGX2010Z004]
- National 1000 Young Talents Program
Lead halide perovskites, such as methylammonium lead iodide (MAPbI(3)) can reach near 100% internal quantum efficiency in single solar cells, but they still encounter significant thermodynamic losses in photon energy to offset device photovoltage and performance. Herein, a novel prismatic perovskite solar cell with light trapping configuration, namely, Prim PVSC, is designed to mitigate such losses in devices, through modulating the pathway of light inside series cells, wherein incident high-to-low energy photons are separately captured by four horizontally aligned MAPbI(x)Br(3-X) subcells with varied bandgaps. This newly designed PVSC has remarkably led to a record open circuit voltage of 5.3 V in four series devices and power conversion efficiency of 21.3%, which could provide a new way to break the performance bottleneck of perovskites. Practically, this type of device architecture could also be applied in flexible modules for large-area application.
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