Journal
COATINGS
Volume 6, Issue 4, Pages -Publisher
MDPI AG
DOI: 10.3390/coatings6040044
Keywords
atmospheric pressure plasma; dye-sensitized solar cells; graphene; reduced graphene oxide; chloroplatinic acid; platinum; composites
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Funding
- Ministry of Science and Technology of Taiwan [MOST 105-2221-E-002-047-MY3]
- Nano-Electro-Mechanical-Systems Research Center at National Taiwan University
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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.
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