Enhanced performance of perovskite solar cells by modulating the Lewis acid-base reaction

被引：70
|
作者：
Cao, Xiaobing [1 ]
Li, Changli [1 ]
Li, Yahui [1 ]
Fang, Fei [1 ,2 ]
Cui, Xian [1 ]
Yao, Youwei [2 ]
Wei, Jinquan [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Key Lab Adv Mat Proc Technol,Educ Minist, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Grad Sch Shenzhen, Inst Adv Mat, Shenzhen 518055, Peoples R China
来源：
NANOSCALE | 2016年 / 8卷 / 47期
关键词：
SOLUTION-PROCESSED PEROVSKITE; SEQUENTIAL DEPOSITION; DEVICE EFFICIENCY; FILM MORPHOLOGY; HOLE CONDUCTOR; CRYSTAL-GROWTH; THIN-FILMS; CRYSTALLIZATION; ADDUCT; PBI2;
D O I：
10.1039/c6nr07450b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The Lewis acid-base reaction between PbI2 and solvent molecules is popular in fabricating PbI2 films by a two-step method for making perovskite solar cells. Here, we control the microstructure of PbI2 films through modulating the Lewis acid-base reaction by adding a small amount of N-methyl pyrrolidone into PbI2/DMF solution. PbI2 films with excellent crystallinity and full coverage are fabricated by spin-coating the mixed solution on the substrate, which leads to high quality perovskite layers with low recombination rate and high efficiency for carrier transfer. As a result, the power conversion efficiency of the best perovskite solar cells increases from 13.3% to 17.5%.
引用
收藏
页码：19804 / 19810
页数：7
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