用于高效四端钙钛矿/硅串联太阳能电池的纯相、大晶粒宽带隙钙钛矿薄膜。
Pure-Phase, Large-Grained Wide-Band-Gap Perovskite Films for High-Efficiency, Four-Terminal Perovskite/Silicon Tandem Solar Cells.
作者信息
Ma Shaohua, Zhu Weidong, Han Tianjiao, Zhang Chunfu, Gao Peng, Guo Yonggang, Song Zhicheng, Ni Yufeng, Qiao Dayong
机构信息
Key Laboratory of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China.
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, Xi'an 710071, China.
出版信息
ACS Appl Mater Interfaces. 2023 Aug 30;15(34):40719-40726. doi: 10.1021/acsami.3c05333. Epub 2023 Aug 17.
High-quality, stable perovskite films with a wide band gap between 1.65 and 1.80 eV are highly suitable for efficient and cost-competitive silicon-based tandem solar cells. Herein, we demonstrate that the combined strategies of the Pb(SCN) additive and air annealing can enable the CsFAPb(IBr) films with a wide band gap of 1.65 eV and favored properties including pure composition, high crystallinity, micro-sized grains, and reduced defects. With these desired films, the average efficiencies of semitransparent perovskite solar cells (PSCs) are boosted from (18.13 ± 0.31) to (20.35 ± 0.28)%. Further, the semitransparent PSC is used to assemble the four-terminal perovskite/TOPCon tandem solar cell. Benefiting from its excellent performance and preferred optical properties, the obtained tandem solar cell yields a milestone efficiency of 30.32%.
具有1.65至1.80 eV宽带隙的高质量、稳定的钙钛矿薄膜非常适合用于高效且具有成本竞争力的硅基串联太阳能电池。在此，我们证明，Pb(SCN)添加剂和空气退火的组合策略能够使CsFAPb(IBr)薄膜具有1.65 eV的宽带隙，并具有包括纯成分、高结晶度、微米级晶粒和减少缺陷在内的良好特性。使用这些理想的薄膜，半透明钙钛矿太阳能电池（PSC）的平均效率从（18.13±0.31）%提高到了（20.35±0.28）%。此外，半透明PSC被用于组装四端钙钛矿/TOPCon串联太阳能电池。得益于其优异的性能和良好的光学特性，所获得的串联太阳能电池实现了30.32%的里程碑式效率。
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