Large fill-factor bilayer iodine perovskite solar cells fabricated by a low-temperature solution-process

被引：770

作者：

Wang, Qi ^{[1
]}

Shao, Yuchuan ^{[1
]}

Dong, Qingfeng ^{[1
]}

Xiao, Zhengguo ^{[1
]}

Yuan, Yongbo ^{[1
]}

Huang, Jinsong ^{[1
]}

机构：

[1] Univ Nebraska, Dept Mech & Mat Engn, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2014年 / 7卷 / 07期

基金：

美国国家科学基金会;

关键词：

LOW-COST; PHOTODETECTORS; LENGTHS; ROUTE; RANGE;

D O I：

10.1039/c4ee00233d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work studied the influence of the methylammonium iodide/lead iodine precursor ratio on the perovskite film morphology and device performance. Using a non-stoichiometric precursor solution was demonstrated to be critical to form stoichiometric perovskite films. The compositions of the spun perovskite films were very sensitive to the surface of substrates, and can be very different from that in precursor solutions. Remarkably, we found that the unique double fullerene layers adopted could dramatically reduce dark current leakage by forming a Schottky junction with the anode, and effectively passivate traps in perovskite to increase the efficiency by boosting the fill factor to above 80% for perovskite solar cells.

引用

页码：2359 / 2365

页数：7

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