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Journal of Photonics for Energy

Transparent conductive oxide-less back contact dye-sensitized solar cells using flat titanium sheet with microholes for photoanode fabrication
Author(s): Azwar Hayat; Ajay Kumar Baranwal; Masaki Nakamura; Fujisawa Shigeki; Shyam S. Pandey; Tingli Ma; Shuzi Hayase
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Paper Abstract

A flat titanium sheet with microholes (FTS-MH) has been utilized to fabricate transparent conductive oxide-less dye-sensitized solar cells (TCO-less DSSCs) in back contact device architecture. Utilization of FTS-MH to fabricate a TCO-less photoanode offers several advantages in terms of simplicity and ease of fabrication as compared with the TCO-less DSSCs structure reported previously. Hydrogen peroxide ( H 2 O 2 ) surface treatments on FTS-MH have shown important factors to enhance the photoanode properties. H 2 O 2 surface treatment is able to change the surface morphology of FTS-MH, and the created anatase titanium dioxide ( TiO 2 ) nanostructures increase the surface contact between the FTS-MH and the coated mesoporous TiO 2 . Electrochemical impedance investigations reveled that improvements of the FTS - MH / TiO 2 and TiO 2 / dye / electrolyte interface led to hampered charge recombination resulting in enhancement of both short-circuit current density and open-circuit voltage, respectively. Even after removal of both TCO layers, our complete TCO-less DSSCs exhibited a power conversion efficiency of 7.25% under simulated solar irradiation.

Paper Details

Date Published: 13 January 2017
PDF: 12 pages
J. Photon. Energy 7(1) 015501 doi: 10.1117/1.JPE.7.015501
Published in: Journal of Photonics for Energy Volume 7, Issue 1
Show Author Affiliations
Azwar Hayat, Kyushu Institute of Technology (Japan)
Hasanuddin Univ. (Indonesia)
Ajay Kumar Baranwal, Kyushu Institute of Technology (Japan)
Masaki Nakamura, USHIO, INC. (Japan)
Fujisawa Shigeki, USHIO, INC. (Japan)
Shyam S. Pandey, Kyushu Institute of Technology (Japan)
Tingli Ma, Kyushu Institute of Technology (Japan)
Shuzi Hayase, Kyushu Institute of Technology (Japan)

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