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

页码：19804 / 19810

页数：7

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