Efficient two-terminal all-perovskite tandem solar cells enabled by high-quality low-bandgap absorber layers

被引:479
作者
Zhao, Dewei [1 ,2 ]
Chen, Cong [1 ,2 ,3 ]
Wang, Changlei [1 ,2 ,3 ]
Junda, Maxwell M. [1 ,2 ]
Song, Zhaoning [1 ,2 ]
Grice, Corey R. [1 ,2 ]
Yu, Yue [1 ,2 ]
Li, Chongwen [1 ,2 ]
Subedi, Biwas [1 ,2 ]
Podraza, Nikolas J. [1 ,2 ]
Zhao, Xingzhong [3 ]
Fang, Guojia [3 ]
Xiong, Ren-Gen [4 ,5 ]
Zhu, Kai [6 ]
Yan, Yanfa [1 ,2 ]
机构
[1] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA
[2] Univ Toledo, Wright Ctr Photovolta Innovat & Commercializat, 2801 W Bancroft St, Toledo, OH 43606 USA
[3] Wuhan Univ, Key Lab Artificial Micro Nano Struct, Minist Educ, Sch Phys & Technol, Wuhan, Hubei, Peoples R China
[4] Nanchang Univ, Ordered Matter Sci Res Ctr, Nanchang, Jiangxi, Peoples R China
[5] Southeast Univ, Jiangsu Key Lab Sci & Applicat Mol Ferroelect, Nanjing, Jiangsu, Peoples R China
[6] Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO USA
来源
NATURE ENERGY | 2018年 / 3卷 / 12期
关键词
HALIDE PEROVSKITES; ABSORPTION-EDGE; TIN; PHOTOVOLTAICS; SPECTROSCOPY; FABRICATION; GROWTH; IODIDE;
D O I
10.1038/s41560-018-0278-x
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Multi-junction all-perovskite tandem solar cells are a promising choice for next-generation solar cells with high efficiency and low fabrication cost. However, the lack of high-quality low-bandgap perovskite absorber layers seriously hampers the development of efficient and stable two-terminal monolithic all-perovskite tandem solar cells. Here, we report a bulk-passivation strategy via incorporation of chlorine, to enlarge grains and reduce electronic disorder in mixed tin-lead low-bandgap (similar to 1.25 eV) perovskite absorber layers. This enables the fabrication of efficient low-bandgap perovskite solar cells using thick absorber layers (similar to 750 nm), which is a requisite for efficient tandem solar cells. Such improvement enables the fabrication of two-terminal all-perovskite tandem solar cells with a champion power conversion efficiency of 21% and steady-state efficiency of 20.7%. The efficiency is retained to 85% of its initial performance after 80 h of operation under continuous illumination.
引用
收藏
页码:1093 / 1100
页数:8
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