Molecular weight dependent bimolecular recombination in organic solar cells.

Philippa, Bronson, Stolterfoht, Martin, White, Ronald D., Velusamy, Marrapan, Burn, Paul L., Meredith, Paul and Pivrikas, Almantas (2014) Molecular weight dependent bimolecular recombination in organic solar cells.. Journal of Chemical Physics, 141 5: 054903-1-054903-8. doi:10.1063/1.4891369

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Author Philippa, Bronson
Stolterfoht, Martin
White, Ronald D.
Velusamy, Marrapan
Burn, Paul L.
Meredith, Paul
Pivrikas, Almantas
Title Molecular weight dependent bimolecular recombination in organic solar cells.
Journal name Journal of Chemical Physics   Check publisher's open access policy
ISSN 0021-9606
Publication date 2014-08
Year available 2014
Sub-type Article (original research)
DOI 10.1063/1.4891369
Open Access Status File (Publisher version)
Volume 141
Issue 5
Start page 054903-1
End page 054903-8
Total pages 8
Place of publication College Park, MD United States
Publisher American Institute of Physics
Collection year 2015
Language eng
Formatted abstract
Charge carrier recombination is studied in operational organic solar cells made from the polymer:fullerene system PCDTBT:PC71BM (poly[N-9′′- heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′, 1′,3′-benzothiadiazole)]: [6,6]-phenyl-C70-butyric acid methyl ester). A newly developed technique High Intensity Resistance dependent PhotoVoltage is presented for reliably quantifying the bimolecular recombination coefficient independently of variations in experimental conditions, thereby resolving key limitations of previous experimental approaches. Experiments are performed on solar cells of varying thicknesses and varying polymeric molecular weights. It is shown that solar cells made from low molecular weight PCDTBT exhibit Langevin recombination, whereas suppressed (non-Langevin) recombination is found in solar cells made with high molecular weight PCDTBT.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2015 Collection
School of Chemistry and Molecular Biosciences
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
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Created: Fri, 15 Aug 2014, 14:59:51 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences