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Enhanced Performance of Inverted Polymer Solar Cells by Using Poly(ethylene oxide)-Modified ZnO as an Electron Transport Layer

Shao, Shuyan; Zheng, Kaibo LU ; Pullerits, Tönu LU and Zhang, Fengling (2013) In ACS Applied Materials and Interfaces 5(2). p.380-385
Abstract
In this paper, we report enhanced performance of inverted polymer solar cells composed of poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1):[6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) blends by using poly(ethylene oxide) (PEO)-modified ZnO as an electron transport layer. It is found that PEO modification to the ZnO nanoparticle surface can effectively passivate the surface traps of ZnO, suppress the recombination loss of carriers, reduce the series resistance, and improve the electrical coupling of ZnO/active layer. Consequently, both the short-circuit current (J(SC)) and the fill factor (FF) of the inverted solar cells are considerably improved. The resulting power conversion efficiency (PCE) is... (More)
In this paper, we report enhanced performance of inverted polymer solar cells composed of poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1):[6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) blends by using poly(ethylene oxide) (PEO)-modified ZnO as an electron transport layer. It is found that PEO modification to the ZnO nanoparticle surface can effectively passivate the surface traps of ZnO, suppress the recombination loss of carriers, reduce the series resistance, and improve the electrical coupling of ZnO/active layer. Consequently, both the short-circuit current (J(SC)) and the fill factor (FF) of the inverted solar cells are considerably improved. The resulting power conversion efficiency (PCE) is improved to 5.64% as compared to 4.5% of the reference device using a ZnO electron transport layer. Moreover, this approach can also successfully improve the J(SC) and FF of anther inverted solar cell composed of poly[N-9 ''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-dithienyl-2',1',3'-benzothiadiazole)] (PCDTBT):PC71BM blends. The PCE of the device based on the PEO-modified ZnO layer is increased to 6.59% from 5.39% of the reference device based on the ZnO layer. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
electron transport layer, inverted polymer solar cells, bulk, heterojunction, surface modification, ZnO, traps
in
ACS Applied Materials and Interfaces
volume
5
issue
2
pages
380 - 385
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000314143500022
  • scopus:84872841200
ISSN
1944-8244
DOI
10.1021/am302408w
language
English
LU publication?
yes
id
bbfec699-614e-4db3-b9f9-aec01fde1a91 (old id 3590680)
date added to LUP
2013-03-19 14:54:36
date last changed
2019-11-05 01:04:41
@article{bbfec699-614e-4db3-b9f9-aec01fde1a91,
  abstract     = {In this paper, we report enhanced performance of inverted polymer solar cells composed of poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1):[6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) blends by using poly(ethylene oxide) (PEO)-modified ZnO as an electron transport layer. It is found that PEO modification to the ZnO nanoparticle surface can effectively passivate the surface traps of ZnO, suppress the recombination loss of carriers, reduce the series resistance, and improve the electrical coupling of ZnO/active layer. Consequently, both the short-circuit current (J(SC)) and the fill factor (FF) of the inverted solar cells are considerably improved. The resulting power conversion efficiency (PCE) is improved to 5.64% as compared to 4.5% of the reference device using a ZnO electron transport layer. Moreover, this approach can also successfully improve the J(SC) and FF of anther inverted solar cell composed of poly[N-9 ''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-dithienyl-2',1',3'-benzothiadiazole)] (PCDTBT):PC71BM blends. The PCE of the device based on the PEO-modified ZnO layer is increased to 6.59% from 5.39% of the reference device based on the ZnO layer.},
  author       = {Shao, Shuyan and Zheng, Kaibo and Pullerits, Tönu and Zhang, Fengling},
  issn         = {1944-8244},
  keyword      = {electron transport layer,inverted polymer solar cells,bulk,heterojunction,surface modification,ZnO,traps},
  language     = {eng},
  number       = {2},
  pages        = {380--385},
  publisher    = {The American Chemical Society (ACS)},
  series       = {ACS Applied Materials and Interfaces},
  title        = {Enhanced Performance of Inverted Polymer Solar Cells by Using Poly(ethylene oxide)-Modified ZnO as an Electron Transport Layer},
  url          = {http://dx.doi.org/10.1021/am302408w},
  volume       = {5},
  year         = {2013},
}