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π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices

Hui Liu, Hai-Rui Liu, Feng Yang, Ji-En Yang, Jian Song, Meng Li, Zhe Li, Wing Chung Tsoi Orcid Logo, Martin Chinweokwu Eze, Zhi-Yong Liu, Heng Ma, Min Gao, Zhao-Kui Wang

Journal of Power Sources, Volume: 448, Start page: 227420

Swansea University Author: Wing Chung Tsoi Orcid Logo

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DOI (Published version): 10.1016/j.jpowsour.2019.227420

Abstract

A π-conjugated small molecule N,N′-bis(naphthalen-1-yl)-N,N’+-bis(phenyl)benzidine (NPB) is introduced into a poly (bis(4-phenyl)(2,4,6-trimethylphenyl)amine) (PTAA) hole transport layer in inverted perovskite solar cells (PSCs). The NPB doping induces better perovskite crystal growth owing to a str...

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Published in: Journal of Power Sources
ISSN: 0378-7753
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa52942
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spelling 2021-03-18T14:52:41.1518645 v2 52942 2019-12-03 π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices 7e5f541df6635a9a8e1a579ff2de5d56 0000-0003-3836-5139 Wing Chung Tsoi Wing Chung Tsoi true false 2019-12-03 MTLS A π-conjugated small molecule N,N′-bis(naphthalen-1-yl)-N,N’+-bis(phenyl)benzidine (NPB) is introduced into a poly (bis(4-phenyl)(2,4,6-trimethylphenyl)amine) (PTAA) hole transport layer in inverted perovskite solar cells (PSCs). The NPB doping induces better perovskite crystal growth owing to a strong π-π interaction with PTAA and cation-π interactions with CH3NH3+ (MA+). In addition, NPB doping not only improves the wettability of PTAA and regulates the perovskite crystallization to achieve a larger grain size, but also moves the valence band energy of the hole transport layer closer to the perovskite layer. Consequently, the fabricated PSCs delivered a power conversion efficiency (PCE) of 20.15%, with a short-circuit current density (JSC) of 22.60 mA/cm2 and open-circuit voltage (VOC) of 1.14 V. This outcome indicates that PTAA:NPB composite materials present great potential for fabricating high-performance PSCs. Journal Article Journal of Power Sources 448 227420 Elsevier BV 0378-7753 π-conjugated molecule, Energy level alignment, Charge extraction 1 2 2020 2020-02-01 10.1016/j.jpowsour.2019.227420 http://dx.doi.org/10.1016/j.jpowsour.2019.227420 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-03-18T14:52:41.1518645 2019-12-03T10:00:11.8688369 Professional Services ISS - Uncategorised Hui Liu 1 Hai-Rui Liu 2 Feng Yang 3 Ji-En Yang 4 Jian Song 5 Meng Li 6 Zhe Li 7 Wing Chung Tsoi 0000-0003-3836-5139 8 Martin Chinweokwu Eze 9 Zhi-Yong Liu 10 Heng Ma 11 Min Gao 12 Zhao-Kui Wang 13 52942__16029__5f0cb571e16c4f0caf604068c0433fc7.pdf liu2019(4).pdf 2019-12-03T14:00:40.0322922 Output 1422833 application/pdf Accepted Manuscript true 2020-11-21T00:00:00.0000000 © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
spellingShingle π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
Wing Chung Tsoi
title_short π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
title_full π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
title_fullStr π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
title_full_unstemmed π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
title_sort π-Conjugated small molecules enable efficient perovskite growth and charge-extraction for high-performance photovoltaic devices
author_id_str_mv 7e5f541df6635a9a8e1a579ff2de5d56
author_id_fullname_str_mv 7e5f541df6635a9a8e1a579ff2de5d56_***_Wing Chung Tsoi
author Wing Chung Tsoi
author2 Hui Liu
Hai-Rui Liu
Feng Yang
Ji-En Yang
Jian Song
Meng Li
Zhe Li
Wing Chung Tsoi
Martin Chinweokwu Eze
Zhi-Yong Liu
Heng Ma
Min Gao
Zhao-Kui Wang
format Journal article
container_title Journal of Power Sources
container_volume 448
container_start_page 227420
publishDate 2020
institution Swansea University
issn 0378-7753
doi_str_mv 10.1016/j.jpowsour.2019.227420
publisher Elsevier BV
college_str Professional Services
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hierarchy_top_title Professional Services
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hierarchy_parent_title Professional Services
department_str ISS - Uncategorised{{{_:::_}}}Professional Services{{{_:::_}}}ISS - Uncategorised
url http://dx.doi.org/10.1016/j.jpowsour.2019.227420
document_store_str 1
active_str 0
description A π-conjugated small molecule N,N′-bis(naphthalen-1-yl)-N,N’+-bis(phenyl)benzidine (NPB) is introduced into a poly (bis(4-phenyl)(2,4,6-trimethylphenyl)amine) (PTAA) hole transport layer in inverted perovskite solar cells (PSCs). The NPB doping induces better perovskite crystal growth owing to a strong π-π interaction with PTAA and cation-π interactions with CH3NH3+ (MA+). In addition, NPB doping not only improves the wettability of PTAA and regulates the perovskite crystallization to achieve a larger grain size, but also moves the valence band energy of the hole transport layer closer to the perovskite layer. Consequently, the fabricated PSCs delivered a power conversion efficiency (PCE) of 20.15%, with a short-circuit current density (JSC) of 22.60 mA/cm2 and open-circuit voltage (VOC) of 1.14 V. This outcome indicates that PTAA:NPB composite materials present great potential for fabricating high-performance PSCs.
published_date 2020-02-01T04:05:38Z
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score 11.017507

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