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Experimental Study on Reversal Structure of Photoelectrode in DSSCs

[+] Author Affiliations
Wei-Shi Chao, Chen-Ching Ting

National Taipei University of Technology, Taipei, Taiwan

Paper No. IMECE2010-38497, pp. 1097-1104; 8 pages
doi:10.1115/IMECE2010-38497
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4429-8
  • Copyright © 2010 by ASME

abstract

This article presents significant experimental data about the dye-sensitized nano solar cells (DSSCs) using new developed photoelectrode with the reversal structure in our CCT laboratory. The common structure of a photoelectrode from the incident light is the transparent conduction glass, the nano TiO2 semiconduction porous film, and the dye. In working process of DSSC, the photons energy of the incident light is mainly absorbed by the dye. This causes excited electrons in the dye to jump into conduction band of the TiO2 and further to transfer into the outer circuit through the conduction glass. The common structure causes the light hindrance of the dye by the TiO2 semiconduction layer. To reduce the light hindrance of the dye, experimental study in this work used metal mesh to connect the TiO2 layer with the outer circuit. In other words, the new developed photoelectrode used the metal mesh as the conduction substrate to coat the nano TiO2 semiconduction layer and the dye. In this way, the new structure of the photoelectrode from the incident light is the dye, the nano TiO2 semiconduction film, and the conduction metal mesh. The new structure increases amounts of the absorbed light in the dye and further receives the improved results of larger short-circuit current and photoelectric conversion efficiency in DSSCs.

Copyright © 2010 by ASME

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