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Inkjet-printing of hybrid transparent conducting electrodes for organic solar cells

Physica status solidi. A, Applications and materials science, 2014-08, Vol.211 (8), p.1801-1806 [Peer Reviewed Journal]

2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim ;ISSN: 1862-6300 ;EISSN: 1862-6319 ;DOI: 10.1002/pssa.201330463

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  • Title:
    Inkjet-printing of hybrid transparent conducting electrodes for organic solar cells
  • Author: Murali, Bissannagari ; Kim, Do-Geun ; Kang, Jae-Wook ; Kim, Jihoon
  • Subjects: Conducting polymers ; Electrodes ; Indium tin oxide ; inkjet printing ; Mathematical models ; Opacity ; Optical properties ; organic solar cells ; Photovoltaic cells ; Silver ; Solar cells ; Solar energy ; transparent conducting electrodes
  • Is Part Of: Physica status solidi. A, Applications and materials science, 2014-08, Vol.211 (8), p.1801-1806
  • Description: We developed metal‐grid hybrid transparent conducting electrodes (TCEs) by combining a metal grid with a conducting polymer. Metal‐grid hybrid TCEs were prepared by inkjet‐printing with both PEDOT:PSS and Ag nanoparticle inks and applied to the fabrication of organic solar cells (OSCs) instead of indium tin oxide (ITO). The electrical and optical properties of the metal‐grid hybrid TCEs were optimized by modulating the Ag grid's line‐to‐line spacing (pitch). With a Ag‐grid pitch of 1 mm, the metal‐grid hybrid TCEs exhibited a sheet resistance of 10.3 Ω sq−1 and an optical transmittance of 73% which represented ≤10% reduction when compared to the optical transmittance of inkjet‐printed PEDOT:PSS films without Ag grids. Ag covering factor (ACF) was defined using the geometry of the Ag‐grid and incorporated in a theoretical model to calculate the electrical and optical properties of the inkjet‐printed metal‐grid hybrid TCEs. It was found that the experimental values of the TCEs' electrical and optical properties were in good agreement with the calculation results based on the ACF‐incorporated theoretical model. OSCs fabricated with the metal‐grid hybrid TCEs showed a power‐conversion cell efficiency comparable to those of conventional OCSs using ITO. This indicates that the inkjet‐printed metal‐grid hybrid TCE is a promising replacement for ITO to realize cost‐effective OSCs.
  • Publisher: Weinheim: Blackwell Publishing Ltd
  • Language: English
  • Identifier: ISSN: 1862-6300
    EISSN: 1862-6319
    DOI: 10.1002/pssa.201330463
  • Source: Alma/SFX Local Collection
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