Issue 53, 2014

Facile formation of a micro-crater structure for light scattering in quasi-solid state dye-sensitized solar cells

Abstract

Herein, we introduce a hierarchical micro-porous TiO2 photo-anode with optimal morphology tailored for gel-type electrolyte DSSCs. To prepare a micro-crater structure, acetylene-black was blended into the TiO2 paste, and thereafter evaporated at high temperature in a sintering process. The formation of a micro-crater structure with optimal morphology improved the light scattering effect without an additional light scattering layer. In addition, it provided a wide entrance for a fast and complete electrolyte infiltration into the TiO2 film. Full contact between the TiO2 film and the gel-type electrolyte by the micro-crater structure improved the performance of the DSSCs compared to that of the DSSCs without a micro-crater structure. Photo-conversion efficiency of the DSSC using this method was enhanced from 7.9% to 8.7%, while maintaining a high stable efficiency in a 300 hours stability test.

Graphical abstract: Facile formation of a micro-crater structure for light scattering in quasi-solid state dye-sensitized solar cells

Article information

Article type
Paper
Submitted
08 Apr 2014
Accepted
09 Jun 2014
First published
09 Jun 2014

RSC Adv., 2014,4, 28133-28139

Author version available

Facile formation of a micro-crater structure for light scattering in quasi-solid state dye-sensitized solar cells

D. M. Han, K. Ko, C. Han and Y. S. Kim, RSC Adv., 2014, 4, 28133 DOI: 10.1039/C4RA03128H

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