13 January 2017 Transparent conductive oxide-less back contact dye-sensitized solar cells using flat titanium sheet with microholes for photoanode fabrication
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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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Azwar Hayat, Azwar Hayat, Ajay Kumar Baranwal, Ajay Kumar Baranwal, Masaki Nakamura, Masaki Nakamura, Fujisawa Shigeki, Fujisawa Shigeki, Shyam S. Pandey, Shyam S. Pandey, Tingli Ma, Tingli Ma, Shuzi Hayase, Shuzi Hayase, } "Transparent conductive oxide-less back contact dye-sensitized solar cells using flat titanium sheet with microholes for photoanode fabrication," Journal of Photonics for Energy 7(1), 015501 (13 January 2017). https://doi.org/10.1117/1.JPE.7.015501 . Submission: Received: 28 September 2016; Accepted: 22 December 2016
Received: 28 September 2016; Accepted: 22 December 2016; Published: 13 January 2017
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