Dual-function interface engineering for efficient perovskite solar cells

被引：37
|
作者：
Luan, Yigang [1 ,2 ]
Wang, Fuhui [1 ,2 ]
Zhuang, Jing [1 ,2 ]
Lin, Tao [1 ]
Wei, Yuanzhi [1 ,2 ]
Chen, Ningli [1 ,2 ]
Zhang, Yanyan [3 ]
Wang, Fuyi [2 ,3 ]
Yu, Ping [2 ,3 ]
Mao, Lanqun [2 ,3 ]
Liu, Huibiao [1 ,2 ]
Wang, Jizheng [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
[3] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Analyt Chem Living Biosyst, Beijing, Peoples R China
来源：
ECOMAT | 2021年 / 3卷 / 02期
关键词：
interface engineering; interface linker; passivation; perovskite solar cells; pi-pi interaction; LONG-TERM STABILITY; HIGHLY EFFICIENT; PASSIVATION; GRAPHDIYNE; OXIDE; GRAPHYNE; FILMS;
D O I：
10.1002/eom2.12092
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Interface engineering has been proven a powerful tool to improve performances of the perovskite solar cells (PSCs). Herein, highly-conjugated graphdiyne (GDY) is employed as an interface linker between the perovskite film and the hole transport layer (HTL). It is found that GDY can significantly suppress the formation of metallic Pb (a detrimental defect), and reduces carrier recombination. The linker can also form pi-pi stacking interaction with the HTL, and facilitates transport and collection of photogenerated holes. The perovskite/GDY/HTL combination leads to large improvement in both power conversion efficiency (from 19.94% to 22.17%) and device stability. In addition, the GDY is also applied to the 3D/2D PSCs, and an outstanding PCE of 23.42% is achieved.
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页数：9
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