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Coatings 2016, 6(4), 44; doi:10.3390/coatings6040044

Atmospheric-Pressure Plasma Jet Processed Pt-Decorated Reduced Graphene Oxides for Counter-Electrodes of Dye-Sensitized Solar Cells

1
Graduate Institute of Applied Mechanics, National Taiwan University, Taipei 10617, Taiwan
2
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
3
Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
4
Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Alessandro Lavacchi
Received: 31 July 2016 / Revised: 30 September 2016 / Accepted: 10 October 2016 / Published: 13 October 2016
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Abstract

Ultrafast atmospheric-pressure plasma jet (APPJ) processed Pt-decorated reduced graphene oxides (rGOs) were used as counter-electrodes in dye-sensitized solar cells (DSSCs). Pastes containing rGO, ethyl cellulose, terpineol, and chloroplatinic acid were screen-printed and sintered by nitrogen dc-pulse APPJs. Pt nanodots were uniformly distributed on the rGO flakes. When using Pt-decorated rGOs as the counter electrodes of DSSCs, the efficiency of the DSSC first increased and then decreased as the APPJ processing time increased. Nitrogen APPJs can effectively remove organic binders and can reduce chloroplatinic acid to Pt, thereby improving the efficiency of DSSCs. However, over-calcination by APPJ can damage the graphenes and degrade the DSSCs. The addition of Pt mainly improves the fill factor, which thereby increases the efficiency of DSSCs. The optimized APPJ processing time was merely 9 s owing to the vigorous interaction among the rGOs, chloroplatinic acid and nitrogen APPJs. View Full-Text
Keywords: atmospheric pressure plasma; dye-sensitized solar cells; graphene; reduced graphene oxide; chloroplatinic acid; platinum; composites atmospheric pressure plasma; dye-sensitized solar cells; graphene; reduced graphene oxide; chloroplatinic acid; platinum; composites
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wan, T.-H.; Chiu, Y.-F.; Chen, C.-W.; Hsu, C.-C.; Cheng, I.-C.; Chen, J.-Z. Atmospheric-Pressure Plasma Jet Processed Pt-Decorated Reduced Graphene Oxides for Counter-Electrodes of Dye-Sensitized Solar Cells. Coatings 2016, 6, 44.

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