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Open Access Metal-Free Low-Cost Organic Dye-Sensitized ZnO-Nanorod Photoanode for Solid-State Solar Cell

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The synthesis of ZnO nanorods (ZnONRs), by virtue of their anisotropic electronic properties, and their exploitation as photoanode material for low-cost metal-free organic dye-sensitized solar cell (DSSC) are reported. The ZnO nanostructures were prepared through sol–gel method and characterized by scanning electron microscopy (SEM), UV–vis spectroscopy, photoluminescence (PL) spectroscopy and X-ray diffraction (XRD) analyses. The photovoltaic performance of the eosin yellow (eosin-Y) sensitized solar cell employing TiO2 nanoparticles (TiO2NPs) modified poly(ethylene oxide) (PEO) based solid-state polymer electrolyte was evaluated under simulated standard global AM 1.5G sunlight (100 mW/cm2). The solar to electrical energy conversion efficiency (η) of the ZnONRs based DSSC was 0.89%, which is 2.5 times higher than that of the DSSC fabricated with ZnO nanoparticles (0.35%). This enhancement in the efficiency is attributed to an effective conduction of electrons through the 1D ZnO nanostructures.

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Document Type: Research Article

Publication date: December 1, 2011

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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