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Pb–Sn–Cu Ternary Organometallic Halide Perovskite Solar Cells

Li, Meng ; Wang, Zhao‐Kui ; Zhuo, Ming‐Peng ; Hu, Yun ; Hu, Ke‐Hao ; Ye, Qing‐Qing ; Jain, Sagar M. ; Yang, Ying‐Guo ; Gao, Xing‐Yu ; Liao, Liang‐Sheng

Advanced materials (Weinheim), 2018-05, Vol.30 (20), p.e1800258-n/a [Periódico revisado por pares]

Germany: Wiley Subscription Services, Inc

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Título:
Pb–Sn–Cu Ternary Organometallic Halide Perovskite Solar Cells
Autor: Li, Meng ; Wang, Zhao‐Kui ; Zhuo, Ming‐Peng ; Hu, Yun ; Hu, Ke‐Hao ; Ye, Qing‐Qing ; Jain, Sagar M. ; Yang, Ying‐Guo ; Gao, Xing‐Yu ; Liao, Liang‐Sheng
Assuntos: Alloy development ; Alloying ; Copper bromide ; Energy conversion efficiency ; Lead base alloys ; low toxicity ; Materials science ; passivation ; perovskite solar cells ; Perovskites ; Photovoltaic cells ; Red shift ; Solar cells ; Stability ; Substitutes ; ternary perovskite ; Tin
É parte de: Advanced materials (Weinheim), 2018-05, Vol.30 (20), p.e1800258-n/a
Descrição: Exploiting organic/inorganic hybrid perovskite solar cells (PSCs) with reduced Pb content is very important for developing environment‐friendly photovoltaics. Utilizing of Pb–Sn alloying perovskite is considered as an efficient route to reduce the risk of ecosystem pollution. However, the trade‐off between device performance and Sn substitution ratio due to the instability of Sn2+ is a current dilemma. Here, for the first time, the highly efficient Pb–Sn–Cu ternary PSCs are reported by partial replacing of PbI2 with SnI2 and CuBr2. Sn2+ substitution results in a redshift of the absorption onset, whereas worsens the film quality. Interestingly, Cu2+ introduction can passivate the trap sites at the crystal boundaries of Pb–Sn perovskites effectively. Consequently, a power conversion efficiency as high as 21.08% in inverted planar Pb–Sn–Cu ternary PSCs is approached. The finding opens a new route toward the fabrication of high efficiency Pb–Sn alloying perovskite solar cells by Cu2+ passivation. Pb–Sn–Cu ternary perovskite solar cells are fabricated by partially replacing PbI2 with SnI2 and CuBr2. Sn2+ substitution results in a redshift of the absorption onset, but worsens the film quality. Cu2+ substitution paves a route to passivating the trap sites at the crystal boundaries. As a result, a maximum PCE of 21.08% is achieved with improved cell stabiilty.
Editor: Germany: Wiley Subscription Services, Inc
Idioma: Inglês

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Pb–Sn–Cu Ternary Organometallic Halide Perovskite Solar Cells

Li, Meng ; Wang, Zhao‐Kui ; Zhuo, Ming‐Peng ; Hu, Yun ; Hu, Ke‐Hao ; Ye, Qing‐Qing ; Jain, Sagar M. ; Yang, Ying‐Guo ; Gao, Xing‐Yu ; Liao, Liang‐Sheng

Germany: Wiley Subscription Services, Inc

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