期刊
ADVANCED ENERGY MATERIALS
卷 11, 期 48, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202102046
关键词
gradient perovskites; long-term stability; Perovskite; silicon TSCs; tandem solar cells; thermal-evaporated
类别
资金
- National Key Research and Development Program of China [2018YFB1500103]
- National Natural Science Foundation of China [61674084]
- Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China [B16027]
- Tianjin Science and Technology Project [18ZXJMTG00220]
- Key R&D Program of Hebei Province [19214301D]
- Natural Science Foundation of Tianjin [20JCQNJC02070]
- China Postdoctoral Science Foundation [2020T130317, 2020M680864, 2021T140341]
- Fundamental Research Funds for the Central Universities, Nankai University
The perovskite/silicon tandem solar cell can break through the efficiency limitations of silicon cells by optimizing energy level alignment, achieving high efficiency and stability for long-term operation.
The perovskite/silicon tandem solar cell (PK/c-Si TSC) is a reasonable choice that can break through the efficiency limitations of silicon cells. Here, the p-i-n perovskite solar cell is conformally grown by the evaporation-solution combination technique on fully-textured silicon heterojunction cells to realize two-terminal PK/c-Si TSCs. Due to the adverse effect of the residual PbI2 at the bottom of the perovskite bulk on device performance, a thermal-evaporated CsBr thin layer is introduced between the perovskite layer and the hole transport layer to construct a gradient perovskite absorber for optimized energy level alignment, so as to improve the open-circuit voltage and fill factor of the device. Finally, the PK/c-Si tandem cell achieves an efficiency of 27.48% and is stable in nitrogen over 10 000 h.
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