Journal article 1248 views 431 downloads
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 ,
Azzuliani Supangat,
Asim Jilani,
Mitsumasa Iwamoto
Organic Electronics, Volume: 66, Pages: 32 - 42
Swansea University Author: Lijie Li
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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...
Published in: | Organic Electronics |
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ISSN: | 15661199 |
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2019
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URI: | https://cronfa.swan.ac.uk/Record/cronfa47938 |
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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 ACEM 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 Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM 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 |
2019-12-10T07:41:46Z |
_version_ |
1822296434190319616 |
score |
11.048453 |