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

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%. Furthermore, 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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
Publication Date:
Grant/Contract Number:
EE0006709
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; electronic devices; solar cells
OSTI Identifier:
1342744

Bai, Yang, Dong, Qingfeng, Shao, Yuchuan, Deng, Yehao, Wang, Qi, Shen, Liang, Wang, Dong, Wei, Wei, and Huang, Jinsong. Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene. United States: N. p., Web. doi:10.1038/ncomms12806.
Bai, Yang, Dong, Qingfeng, Shao, Yuchuan, Deng, Yehao, Wang, Qi, Shen, Liang, Wang, Dong, Wei, Wei, & Huang, Jinsong. Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene. United States. doi:10.1038/ncomms12806.
Bai, Yang, Dong, Qingfeng, Shao, Yuchuan, Deng, Yehao, Wang, Qi, Shen, Liang, Wang, Dong, Wei, Wei, and Huang, Jinsong. 2016. "Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene". United States. doi:10.1038/ncomms12806. https://www.osti.gov/servlets/purl/1342744.
@article{osti_1342744,
title = {Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene},
author = {Bai, Yang and Dong, Qingfeng and Shao, Yuchuan and Deng, Yehao and Wang, Qi and Shen, Liang and Wang, Dong and Wei, Wei and Huang, Jinsong},
abstractNote = {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%. Furthermore, 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.},
doi = {10.1038/ncomms12806},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {2016},
month = {10}
}