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 effic...

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Main Authors:	Bai, Yang, Dong, Qingfeng, Shao, Yuchuan, Deng, Yehao, Wang, Qi, Shen, Liang, Wang, Dong, Wei, Wei, Huang, Jinsong
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5059465/

id	pubmed-5059465
recordtype	oai_dc
spelling	pubmed-50594652016-10-26 Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene Bai, Yang Dong, Qingfeng Shao, Yuchuan Deng, Yehao Wang, Qi Shen, Liang Wang, Dong Wei, Wei Huang, Jinsong Article 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. Nature Publishing Group 2016-10-05 /pmc/articles/PMC5059465/ /pubmed/27703136 http://dx.doi.org/10.1038/ncomms12806 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Bai, Yang Dong, Qingfeng Shao, Yuchuan Deng, Yehao Wang, Qi Shen, Liang Wang, Dong Wei, Wei Huang, Jinsong
spellingShingle	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
author_facet	Bai, Yang Dong, Qingfeng Shao, Yuchuan Deng, Yehao Wang, Qi Shen, Liang Wang, Dong Wei, Wei Huang, Jinsong
author_sort	Bai, Yang
title	Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene
title_short	Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene
title_full	Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene
title_fullStr	Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene
title_full_unstemmed	Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene
title_sort	enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene
description	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.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5059465/
_version_	1613680614711492608

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

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