Flexo printed sol-gel derived vanadium oxide films as an interfacial hole-transporting layer for organic solar cells

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DOIResolve DOI: http://doi.org/10.1117/12.2079270
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TypeArticle
Proceedings titleProceedings of SPIE - The International Society for Optical Engineering
ConferenceOxide-Based Materials and Devices VI, 8 February 2015 through 11 February 2015
ISSN0277-786X
ISBN9781628414547
Volume9364
Article number93640K
SubjectDye-sensitized solar cells; Hole mobility; Metallic films; Oxides; Printing; Printing presses; Sol-gel process; Sol-gels; Solar cells; Vanadium; Coordinating ligands; Hole transporting layers; Inverted organic solar cells; Organic solar cell; Power conversion efficiencies; Vanadium oxides; Oxide films
AbstractIn this paper we report on the synthesis and development of vanadium oxide precursor flexographic ink for the printing of hole-transporting layers in organic solar cells. For the synthesis of vanadium oxide inks, a sol-gel methodology was utilized. By modifying the vanadium alkoxide precursor with a right type of coordinating ligands a stable and flexoprintable ink has been successfully developed. Flexo-printing afforded smooth and uniform vanadium oxide sol-gel films on top of PCDTBT:PC<inf>70</inf>BM films. The conversion of the synthesized sol-gel film into a corresponding vanadium oxide layer was followed by DSC/TGA and XPS analyses. The inks were used for the fabrication of inverted organic solar cells by flexo-printing. Power conversion efficiencies ranging between 3.5 % and 4.5 % were achieved, which are slightly lower than the reference cells using vacuum-deposited MoO<inf>3</inf> as the hole-transporting layers.
Publication date
PublisherSPIE
LanguageEnglish
AffiliationNational Research Council Canada; Information and Communication Technologies
Peer reviewedYes
NPARC number21275731
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Record identifier73842ceb-f35e-41e0-a558-2a7d5490713e
Record created2015-07-14
Record modified2016-05-09
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