Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum

Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum

Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polyme...

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Main Authors: D. A. Gedefaw, Z. Ma, P. Henriksson, F. Zhang, M. R. Andersson, W. Mammo
Format: Article
Language:English
Published: Chemical Society of Ethiopia 2014-01-01
Series:Bulletin of the Chemical Society of Ethiopia
Subjects:
Polyfluorenes
Bulk-heterojunction solar cells
Optical absorption
HOMO and LUMO
Online Access:http://www.ajol.info/index.php/bcse/article/view/100128
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spelling doaj-1d7b0cc272574eada0c87fa6e1f317302020-11-24T23:35:27ZengChemical Society of EthiopiaBulletin of the Chemical Society of Ethiopia1011-39241726-801X2014-01-0128112113010.4314/bcse.v28i1.14Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrumD. A. GedefawZ. MaP. HenrikssonF. ZhangM. R. AnderssonW. MammoTwo alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to ~2% power conversion efficiency were obtained. DOI: http://dx.doi.org/10.4314/bcse.v28i1.14http://www.ajol.info/index.php/bcse/article/view/100128PolyfluorenesBulk-heterojunction solar cellsOptical absorptionHOMO and LUMO
collection DOAJ
language English
format Article
sources DOAJ
author D. A. Gedefaw
Z. Ma
P. Henriksson
F. Zhang
M. R. Andersson
W. Mammo
spellingShingle D. A. Gedefaw
Z. Ma
P. Henriksson
F. Zhang
M. R. Andersson
W. Mammo
Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
Bulletin of the Chemical Society of Ethiopia
Polyfluorenes
Bulk-heterojunction solar cells
Optical absorption
HOMO and LUMO
author_facet D. A. Gedefaw
Z. Ma
P. Henriksson
F. Zhang
M. R. Andersson
W. Mammo
author_sort D. A. Gedefaw
title Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
title_short Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
title_full Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
title_fullStr Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
title_full_unstemmed Random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
title_sort random polyfluorene co-polymers designed for a better optical absorption coverage of the visible region of the electromagnetic spectrum
publisher Chemical Society of Ethiopia
series Bulletin of the Chemical Society of Ethiopia
issn 1011-3924
1726-801X
publishDate 2014-01-01
description Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to ~2% power conversion efficiency were obtained. DOI: http://dx.doi.org/10.4314/bcse.v28i1.14
topic Polyfluorenes
Bulk-heterojunction solar cells
Optical absorption
HOMO and LUMO
url http://www.ajol.info/index.php/bcse/article/view/100128
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