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Retracted

This article has been retracted at the request of the author as it is identical in the title and the technical content with another article submitted to Solar Energy with the following information, S. Suresh, A. Pandikumar, S. Murugesan, R. Ramaraj and Samuel Paul Raj Photovoltaic, “performance of solid-state solar cells based on ZnO nanosheets sensitized with lowcost metal free organic dye,” Solar Energy, Vol. 85 (2011), doi:10.1016/j.solener.2011.04.016.

Journal of Nanomaterials
Volume 2011, Article ID 301873, 9 pages
http://dx.doi.org/10.1155/2011/301873
Research Article

Photovoltaic Performance of ZnO Nanosheets Solar Cell Sensitized with Beta-Substituted Porphyrin

Saveetha School of Engineering, Saveetha University, Chennai 602105, India

Received 2 August 2010; Revised 20 January 2011; Accepted 9 February 2011

Academic Editor: Christian Brosseau

Copyright © 2011 Arumugam Mahesh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The photoanode of dye-sensitized solar cell (DSSC) was fabricated using two-dimensional ZnO nanosheets (2D ZnO NSs) sensitized with beta-substituted porphyrins photosensitizer, and its photovoltaic performance in solid-state DSSC with TiO2 nanotubes (TiO2 TNs) modified poly (ethylene oxide) (PEO) polymer electrolyte was studied. The ZnO NSs were synthesized through hydrothermal method and were characterized through high-resolution scanning electron microscopy (HRSEM), diffused reflectance spectra (DRS), photoluminescence spectra (PL), and X-ray diffraction (XRD) analysis. The crystallinity of the polymer electrolytes was investigated using X-ray diffraction analysis. The photovoltaic performance of the beta-substituted porphyrins sensitized solar cells was evaluated under standard AM1.5G simulated illumination (100 mW cm−2). The efficiency of energy conversion from solar to electrical due to 2D ZnO NSs based DSSCs is 0.13%, which is about 1.6 times higher than that of the control DSSC using ZnO nanoparticles (ZnO NPs) as photoanode (0.08%), when TiO2 NTs fillers modified PEO electrolyte was incorporated in the DSSCs. The current-voltage ( 𝐼 - 𝑉 ) and photocurrent-time ( 𝐼 - 𝑇 ) curves proved stable with effective collection of electrons, when the 2D ZnO nanostructured photoanode was introduced in the solid-state DSSC.