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UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells

Saqib Rafique, Nur Adilah Roslan, Shahino Mah Abdullah, Lijie Li Orcid Logo, Azzuliani Supangat, Asim Jilani, Mitsumasa Iwamoto

Organic Electronics, Volume: 66, Pages: 32 - 42

Swansea University Author: Lijie Li Orcid Logo

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DOI (Published version): 10.1016/j.orgel.2018.12.005

Abstract

The utilization of UV-ozone (UVO) treated graphene oxide (GO)/PEDOT:PSS bilayer as hole transport layer (HTL) in solution processed organic solar cells (OSCs) is demonstrated. The HTLs were treated with UVO for 0, 5, 10 and 15 min. The 10 min treated OSC showed the best performance and displayed pow...

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Published in: Organic Electronics
ISSN: 15661199
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa47938
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first_indexed 2018-12-11T20:05:08Z
last_indexed 2020-08-25T03:09:49Z
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spelling 2020-08-24T09:34:04.6857033 v2 47938 2018-12-11 UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells ed2c658b77679a28e4c1dcf95af06bd6 0000-0003-4630-7692 Lijie Li Lijie Li true false 2018-12-11 EEEG The utilization of UV-ozone (UVO) treated graphene oxide (GO)/PEDOT:PSS bilayer as hole transport layer (HTL) in solution processed organic solar cells (OSCs) is demonstrated. The HTLs were treated with UVO for 0, 5, 10 and 15 min. The 10 min treated OSC showed the best performance and displayed power conversion efficiency (PCE) of 5.24%, much higher than the untreated OSC device. This enhanced performance is mainly driven by improvements in the short circuit current (∼10.82 mA/cm2) as well as the fill factor (∼57%) that is ascribed to the moderate reduction of GO and increased work function (WF) of PEDOT:PSS after UVO treatment, which improved the contact conditions between the HTL and photoactive layer. Consequently, extraction efficiency of the photogenerated holes is increased, while recombination probability of holes and electrons in the photoactive layer is decreased. Moreover, the UVO-reduction of GO and consequently increased conductivity of reduced-GO (r-GO) has been modeled and proved using the density functional theory (DFT) simulation. Meanwhile, the 15 min UVO-treated OSC device showed severe reduction in the PCE that dropped to 2.11%, possibly due to couple of factors such as decomposition of chemical bonds, significant increase in the series resistance and pronounced drop in the photovoltaic performance parameters. Journal Article Organic Electronics 66 32 42 15661199 UV-Ozone, Reduced graphene oxide, GO/PEDOT:PSS hole transport layer 10 12 2019 2019-12-10 10.1016/j.orgel.2018.12.005 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2020-08-24T09:34:04.6857033 2018-12-11T17:50:50.4075897 Saqib Rafique 1 Nur Adilah Roslan 2 Shahino Mah Abdullah 3 Lijie Li 0000-0003-4630-7692 4 Azzuliani Supangat 5 Asim Jilani 6 Mitsumasa Iwamoto 7 47938__18025__a63422e899b543f6bacda4a8152c34b3.pdf Accepted version_OE.47938.pdf 2020-08-24T09:29:46.9162889 Output 1077966 application/pdf Accepted Manuscript true true eng
title UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
spellingShingle UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
Lijie Li
title_short UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
title_full UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
title_fullStr UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
title_full_unstemmed UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
title_sort UV- ozone treated graphene oxide/ PEDOT:PSS bilayer as a novel hole transport layer in highly efficient and stable organic solar cells
author_id_str_mv ed2c658b77679a28e4c1dcf95af06bd6
author_id_fullname_str_mv ed2c658b77679a28e4c1dcf95af06bd6_***_Lijie Li
author Lijie Li
author2 Saqib Rafique
Nur Adilah Roslan
Shahino Mah Abdullah
Lijie Li
Azzuliani Supangat
Asim Jilani
Mitsumasa Iwamoto
format Journal article
container_title Organic Electronics
container_volume 66
container_start_page 32
publishDate 2019
institution Swansea University
issn 15661199
doi_str_mv 10.1016/j.orgel.2018.12.005
document_store_str 1
active_str 0
description The utilization of UV-ozone (UVO) treated graphene oxide (GO)/PEDOT:PSS bilayer as hole transport layer (HTL) in solution processed organic solar cells (OSCs) is demonstrated. The HTLs were treated with UVO for 0, 5, 10 and 15 min. The 10 min treated OSC showed the best performance and displayed power conversion efficiency (PCE) of 5.24%, much higher than the untreated OSC device. This enhanced performance is mainly driven by improvements in the short circuit current (∼10.82 mA/cm2) as well as the fill factor (∼57%) that is ascribed to the moderate reduction of GO and increased work function (WF) of PEDOT:PSS after UVO treatment, which improved the contact conditions between the HTL and photoactive layer. Consequently, extraction efficiency of the photogenerated holes is increased, while recombination probability of holes and electrons in the photoactive layer is decreased. Moreover, the UVO-reduction of GO and consequently increased conductivity of reduced-GO (r-GO) has been modeled and proved using the density functional theory (DFT) simulation. Meanwhile, the 15 min UVO-treated OSC device showed severe reduction in the PCE that dropped to 2.11%, possibly due to couple of factors such as decomposition of chemical bonds, significant increase in the series resistance and pronounced drop in the photovoltaic performance parameters.
published_date 2019-12-10T03:58:10Z
_version_ 1763752951543758848
score 11.01628

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