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    Electrical limit of silver nanowire electrodes: Direct measurement of the nanowire junction resistance

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    Type
    Article
    Authors
    Selzer, Franz
    Floresca, Carlo
    Kneppe, David
    Bormann, Ludwig
    Sachse, Christoph
    Weiß, Nelli
    Eychmüller, Alexander
    Amassian, Aram cc
    Müller-Meskamp, Lars
    Leo, Karl
    KAUST Department
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Organic Electronics and Photovoltaics Group
    Physical Science and Engineering (PSE) Division
    Date
    2016-04-19
    Online Publication Date
    2016-04-19
    Print Publication Date
    2016-04-18
    Permanent link to this record
    http://hdl.handle.net/10754/606961
    
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    Abstract
    We measure basic network parameters of silvernanowire (AgNW) networks commonly used as transparent conductingelectrodes in organic optoelectronic devices. By means of four point probing with nanoprobes, the wire-to-wire junction resistance and the resistance of single nanowires are measured. The resistanceRNW of a single nanowire shows a value of RNW=(4.96±0.18) Ω/μm. The junction resistanceRJ differs for annealed and non-annealed NW networks, exhibiting values of RJ=(25.2±1.9) Ω (annealed) and RJ=(529±239) Ω (non-annealed), respectively. Our simulation achieves a good agreement between the measured network parameters and the sheet resistanceRS of the entire network. Extrapolating RJ to zero, our study show that we are close to the electrical limit of the conductivity of our AgNW system: We obtain a possible RS reduction by only ≈20% (common RS≈10 Ω/sq). Therefore, we expect further performance improvements in AgNW systems mainly by increasing NW length or by utilizing novel network geometries.
    Citation
    Electrical limit of silver nanowire electrodes: Direct measurement of the nanowire junction resistance 2016, 108 (16):163302 Applied Physics Letters
    Sponsors
    This work was funded by the European Community’s Seventh Framework Program (FP7/2007-2013) under Grant Agreement No. 314068 and within the DFG Cluster of Excellence “Center for Advancing Electronics Dresden.”
    Publisher
    AIP Publishing
    Journal
    Applied Physics Letters
    DOI
    10.1063/1.4947285
    Additional Links
    http://scitation.aip.org/content/aip/journal/apl/108/16/10.1063/1.4947285
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.4947285
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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