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Facile Approach toward Chemical Modification of Ag Nanowires by PEDOT as Transparent Electrode for Organic Solar Cells

Abstract

Among recent investigation of transparent electrode materials applied in photoelectric devices, poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is widely used because of its high transparency and low material cost. However, relatively low conductivity, hygroscopicity and acidity still limit its further application. Herein, a novel PEDOT:PSS:S-AgNWs composite has been prepared by in-situ oxidative polymerization of EDOT by PSS and 4-mercaptobenzenesulfonic acid modified silver nanowires (S-AgNWs), in which there are electrostatic interactions between PEDOT and sulfonic groups from PSS and S-AgNWs. Compared with commercial Clevios PH1000, more crystalline and conductive PEDOT with quinoid-conformation was developed due to PSS was partially substituted by S-AgNWs, which led to PEDOT:PSS:S-AgNWs showing a lower sheet resistance (64 Ω·sq-1 at ∼94.8% transmittance). Furthermore, the reduced work function, hygroscopicity and acidity properties for PEDOT:PSS:S-AgNWs derived from the in-situ composite between S-AgNWs and PEDOT, as well as the reduction of PSS content, results in the organic solar cells (OSCs) based on PEDOT:PSS:S-AgNWs transparent electrode yielding a power conversion efficiency of 10.2% and good storage stability.

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Publication details

The article was received on 13 Oct 2017, accepted on 01 Dec 2017 and first published on 04 Dec 2017


Article type: Paper
DOI: 10.1039/C7TC04673A
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    Facile Approach toward Chemical Modification of Ag Nanowires by PEDOT as Transparent Electrode for Organic Solar Cells

    H. Zhou, Y. Wang, J. Zhang, Z. Yu, Y. Li, L. Tan and Y. Chen, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC04673A

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