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Pure-Phase, Large-Grained Wide-Band-Gap Perovskite Films for High-Efficiency, Four-Terminal Perovskite/Silicon Tandem Solar Cells
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-08-17 , DOI: 10.1021/acsami.3c05333 Shaohua Ma 1 , Weidong Zhu 2, 3 , Tianjiao Han 2 , Chunfu Zhang 2 , Peng Gao 3 , Yonggang Guo 3 , Zhicheng Song 3 , Yufeng Ni 3 , Dayong Qiao 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-08-17 , DOI: 10.1021/acsami.3c05333 Shaohua Ma 1 , Weidong Zhu 2, 3 , Tianjiao Han 2 , Chunfu Zhang 2 , Peng Gao 3 , Yonggang Guo 3 , Zhicheng Song 3 , Yufeng Ni 3 , Dayong Qiao 1
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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)2 additive and air annealing can enable the Cs0.22FA0.78Pb(I0.85Br0.15)3 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%.
中文翻译：
用于高效四端子钙钛矿/硅串联太阳能电池的纯相、大晶粒宽带隙钙钛矿薄膜
高品质、稳定的钙钛矿薄膜具有 1.65 至 1.80 eV 的宽带隙，非常适合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) 2添加剂和空气退火的组合策略可以使Cs 0.22 FA 0.78 Pb(I 0.85 Br 0.15 ) 3薄膜具有1.65 eV的宽带隙和有利的性能，包括纯成分、结晶度高、晶粒细、缺陷少。有了这些所需的薄膜，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（20.35±0.28）％。此外，半透明PSC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优选的光学特性，所获得的串联太阳能电池的效率达到了30.32%的里程碑。
更新日期：2023-08-17
中文翻译：
用于高效四端子钙钛矿/硅串联太阳能电池的纯相、大晶粒宽带隙钙钛矿薄膜
高品质、稳定的钙钛矿薄膜具有 1.65 至 1.80 eV 的宽带隙，非常适合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) 2添加剂和空气退火的组合策略可以使Cs 0.22 FA 0.78 Pb(I 0.85 Br 0.15 ) 3薄膜具有1.65 eV的宽带隙和有利的性能，包括纯成分、结晶度高、晶粒细、缺陷少。有了这些所需的薄膜，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（20.35±0.28）％。此外，半透明PSC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优选的光学特性，所获得的串联太阳能电池的效率达到了30.32%的里程碑。
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