Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 114, Issue -, Pages 15-23Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2013.02.020
Keywords
PEDOT:PSS; Ag nanowire; Brush painting; Anode; Flexible organic solar cells
Funding
- New & Renewable Energy of Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant [2011T100200034]
- Fundamental R&D Program for Core Technology of Materials Grant [10031768]
- Ministry of Knowledge Economy (MKE), Republic of Korea
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We fabricated highly transparent and flexible poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/Ag nanowire (NW)/PEDOT:PSS (PAP) multilayer electrodes by continuous brush-painting for used as flexible anode in highly flexible organic solar cells (FOSCs). By combining the flexibility of PEDOT:PSS and low resistivity of Ag NWs, we fabricated highly flexible PAP multilayer electrodes with a low sheet resistance of 13.96 Omega/square and a high diffusive transmittance of 80.48%. Effective embedment of the Ag NW network into the conductive PEDOT:PSS layer led to metallic conductivity and a high diffusive transmittance, which are desirable in transparent anodes for FOSCs. In addition, the PAP electrode showed an invariable resistance (Delta R/R-0) during outer and inner bending testing, due to the high strain failure of both PEDOT:PSS and Ag NW network. The identical current density-voltage behavior of the FOSCs with the brush-painted PAP electrode as the FOSC with a conventional ITO electrode demonstrates that the brush-painted PAP multilayer is a promising alternative to high-cost ITO electrodes to produce cost-efficient FOSCs. Furthermore, we suggest that high-performance, transparent, and flexible electrodes can be fabricated by low-cost brush-painting for paintable FOSCs. (C) 2013 Published by Elsevier B.V.
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