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

页码：1093 / 1100

页数：8

共 55 条

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