Synthesis and characterization of high molecular weight and regioregular poly[3-(4-octylphenyl)thiophene] for bulk heterojunction photovoltaic cells

F. Ouhib, R. C. Hiorns, S. Bailly, R. De Bettignies, A. Khoukh, H. Preud'homme, J. Desbrières, C. Dagron-Lartigau

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Various poly[3-(4-octylphenyl)thiophene]s (POPTs) were prepared either by oxidative polymerisation or by chain-growth Grignard metathesis (GRIM). In accordance with previous results, the former polymerisation yielded polydisperse POPT. The method based on the GRIM reaction made possible the preparation of medium and higher molecular weight polymers with lower polydispersities. The POPTs were found to have band-gaps of ca. 1.7 eV. The photovoltaic characteristics of POPTs-blend-[6,6]-phenyl C61 butyric acid methyl ester (PCBM) composites under AM 1.5 conditions in standard ITO/PEDOT-blend-PSS/ POPT-blend-PCBM/LiF/Al solar cells were studied. It was found that POPT prepared via GRIM could deliver greater efficiencies than its equivalent prepared by oxidative polymerisation. It is expected that access to even higher molecular weight POPTs may improve the efficiencies of such devices.

Original languageEnglish
Pages (from-to)343-346
Number of pages4
JournalEPJ Applied Physics
Volume37
Issue number3
DOIs
Publication statusPublished - 1 Mar 2007
Externally publishedYes

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Photovoltaic cells
metathesis
photovoltaic cells
Thiophene
thiophenes
Heterojunctions
heterojunctions
molecular weight
Butyric acid
polymerization
butyric acid
Molecular weight
Polymerization
esters
Esters
synthesis
Butyric Acid
Polydispersity
ITO (semiconductors)
Solar cells

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Synthesis and characterization of high molecular weight and regioregular poly[3-(4-octylphenyl)thiophene] for bulk heterojunction photovoltaic cells. / Ouhib, F.; Hiorns, R. C.; Bailly, S.; De Bettignies, R.; Khoukh, A.; Preud'homme, H.; Desbrières, J.; Dagron-Lartigau, C.

In: EPJ Applied Physics, Vol. 37, No. 3, 01.03.2007, p. 343-346.

Research output: Contribution to journalArticle

Ouhib, F. ; Hiorns, R. C. ; Bailly, S. ; De Bettignies, R. ; Khoukh, A. ; Preud'homme, H. ; Desbrières, J. ; Dagron-Lartigau, C. / Synthesis and characterization of high molecular weight and regioregular poly[3-(4-octylphenyl)thiophene] for bulk heterojunction photovoltaic cells. In: EPJ Applied Physics. 2007 ; Vol. 37, No. 3. pp. 343-346.
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