Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene

被引：384

作者：

Bai, Yang ^{[1
,2
]}

Dong, Qingfeng ^{[1
,2
]}

Shao, Yuchuan ^{[1
,2
]}

Deng, Yehao ^{[1
,2
]}

Wang, Qi ^{[1
,2
]}

Shen, Liang ^{[1
,2
]}

Wang, Dong ^{[1
,2
]}

Wei, Wei ^{[1
,2
]}

Huang, Jinsong ^{[1
,2
]}

机构：

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

[2] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

关键词：

THIN-FILMS; PERFORMANCE; HYSTERESIS; EMERGENCE; ABSORBER; LENGTHS; GROWTH;

D O I：

10.1038/ncomms12806

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The instability of hybrid perovskite materials due to water and moisture arises as one major challenge to be addressed before any practical application of the demonstrated high efficiency perovskite solar cells. Here we report a facile strategy that can simultaneously enhance the stability and efficiency of p-i-n planar heterojunction-structure perovskite devices. Crosslinkable silane molecules with hydrophobic functional groups are bonded onto fullerene to make the fullerene layer highly water-resistant. Methylammonium iodide is introduced in the fullerene layer for n-doping via anion-induced electron transfer, resulting in dramatically increased conductivity over 100-fold. With crosslinkable silane-functionalized and doped fullerene electron transport layer, the perovskite devices deliver an efficiency of 19.5% with a high fill factor of 80.6%. A crosslinked silane-modified fullerene layer also enhances the water and moisture stability of the non-sealed perovskite devices by retaining nearly 90% of their original efficiencies after 30 days' exposure in an ambient environment.

引用

页数：9

共 57 条

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