Stable tin perovskite solar cells enabled by widening the time window for crystallization

被引：13

作者：

Dai, Zhensheng ^{[1
,2
]}

Tang, Wentao ^{[1
,2
]}

Wang, Tao ^{[1
,2
]}

Lv, Taoyuze ^{[1
,2
,3
]}

Luo, Xinhui ^{[1
,2
]}

Cui, Danyu ^{[1
,2
]}

Sun, Ruitian ^{[1
,2
]}

Qiao, Liang ^{[1
,2
]}

Chen, Han ^{[1
,2
]}

Zheng, Rongkun ^{[3
]}

Yang, Xudong ^{[1
,2
]}

Han, Liyuan ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Joint Res Ctr Clean Energy Mat, Shanghai 200240, Peoples R China

[3] Univ Sydney, Australian Ctr Microscopy & Microanal, Sch Phys, Sydney Nano Inst, Sydney, NSW 2006, Australia

来源：

SCIENCE CHINA-MATERIALS | 2021年 / 64卷 / 08期

基金：

中国国家自然科学基金;

关键词：

lead-free perovskite; FASnI(3); perovskite solar cells; crystallization; stability;

D O I：

10.1007/s40843-020-1581-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tin perovskite solar cells (TPSCs) are the most promising candidates for lead-free perovskite solar cells (PSCs). However, the poor crystallization and chemical stability of Sn perovskites are the two challenging issues for further application of TPSCs. Here, we present a strategy to stabilize CH(NH2)(2)SnI3 (FASnI(3)) perovskite enabled by an amine complex, CH3NH3I center dot 3CH(3)NH(2), which can hinder the major degradation issue caused by the oxidation of Sn2+ to Sn4+. The resulting Sn perovskite films exhibit enhanced crystallinity and stability in comparison with those made with conventional inorganic SnF2 additives. Finally, the device achieved a higher external quantum efficiency for charge extraction and a power conversion efficiency (PCE) of 9.53%, which maintained more than 90% of the initial efficiency after 1000 h of light soaking under the standard AM 1.5 G solar illumination.

引用

页码：1849 / 1857

页数：9

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