Increased charge transfer of Poly (ethylene oxide) based electrolyte by addition of small molecule and its application in dye-sensitized solar cells
2013 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 87, 526-531 p.Article in journal (Refereed) Published
A Poly (ethylene oxide) based polymer electrolyte impregnated with 2-Mercapto benzimidazole was comprehensively characterized by XRD, UV-visible spectroscopy, FTIR as well as electrochemical impedance spectroscopy. It was found that the crystallization of PEO was dramatically reduced and the ionic conductivity of the electrolyte was increased 4.5 fold by addition of 2-Mercapto benzimidazole. UV-visible and FTIR spectroscopes indicated the formation of charge transfer complex between 2-Mercapto benzimidazole and iodine of the electrolyte. Dye-sensitized solar cells with the polymer electrolytes were assembled. It was found that both the photocurrent density and photovoltage were enhanced with respect to the DSC without 2-Mercapto benzimidazole, leading to a 60% increase of the performance of the cell.
Place, publisher, year, edition, pages
2013. Vol. 87, 526-531 p.
Dye solar cells, Polymer electrolyte, UV-visible spectroscopy
Other Chemistry Topics
IdentifiersURN: urn:nbn:se:kth:diva-118150DOI: 10.1016/j.electacta.2012.09.030ISI: 000315171100068ScopusID: 2-s2.0-84870213158OAI: oai:DiVA.org:kth-118150DiVA: diva2:604871
QC 201302122013-02-122013-02-122013-03-22Bibliographically approved