Journal article 776 views 593 downloads
Pb-Sn-Cu Ternary Organometallic Halide Perovskite Solar Cells
Meng Li,
Zhao-Kui Wang,
Ming-Peng Zhuo,
Yun Hu,
Ke-Hao Hu,
Qing-Qing Ye,
Sagar Jain,
Ying-Guo Yang,
Xing-Yu Gao,
Liang-Sheng Liao
Advanced Materials, Start page: 1800258
Swansea University Author: Sagar Jain
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DOI (Published version): 10.1002/adma.201800258
Abstract
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...
| Published in: | Advanced Materials |
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| ISSN: | 0935-9648 |
| Published: |
2018
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa38884 |
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| Abstract: |
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. |
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| Item Description: |
2018 |
| College: |
Faculty of Science and Engineering |
| Start Page: |
1800258 |