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Design and development of an integrated device consisting of an independent solar cell with electrical storage capacity

Authors

  • Pothanad A. Mini,

    1. Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham (University), Kochi, Kerala, India
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  • Shantikumar V. Nair,

    Corresponding author
    • Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham (University), Kochi, Kerala, India
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  • Kavasseri R. V. Subramanian

    Corresponding author
    • Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham (University), Kochi, Kerala, India
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  • The information contained in this paper is patent pending (Indian Patent Application No. 3273/CHE/2010) and is protected by Indian Law.

Correspondence: S. V. Nair and K. R. V. Subramanian, Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham (University), Kochi-682 041, Kerala, India.

E-mail: shantinair@aims.amrita.edu; krvsubramanian@aims.amrita.edu

ABSTRACT

A thin film-integrated device was constructed consisting of photovoltaic layers combined with additional layers to store charge in real time within the same device. In our design, a dye-sensitized solar cell and capacitor layers are integrated by a double-anodized titanium plate, which consists of TiO2 nanotubes grown on either side by electrochemical anodization. The combination device can act either as an independent solar cell, a capacitor, or as a solar cell/capacitor device. The results presented here illustrate the capacitive behavior of high surface area nanotubular metal oxide films, with an achieved capacitance of 140 μF cm−2. Copyright © 2012 John Wiley & Sons, Ltd.

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