Journal
SURFACE & COATINGS TECHNOLOGY
Volume 242, Issue -, Pages 8-13Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2013.12.075
Keywords
Dye-sensitized solar cells; Transparent; Counter electrode; Graphene oxide-Pt composite; Pulse current electrodeposition
Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [12A12852361]
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Science, ICT and Future Planning [NRF-2013R1A1A1011880]
- National Research Foundation of Korea [31Z20130012940] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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To use as counter electrode in dye-sensitized solar cells (DSSCs) highly transparent graphene oxide (GO)-Pt composite film was fabricated via spin-coating of synthesized GO followed by pulse current (PC) electrodeposition of Pt, which has many benefits such as controlling of particle size and density, remarkable adhesion, uniform morphology, and simple and atmospheric pressure method without any use of vacuum systems. Compared to GO counter electrode, uniform distribution of Pt nanoparticles with a size of similar to 30 nm on GO leads to dramatic improvement of electrocatalytic activity toward the l(3)(-) + 2e(-) = 3I(-) reaction, and thus overall power conversion efficiency was increased from 3.99% to 7.10%. Moreover, GO-Pt composite counter electrode showed superior characteristics to PC electrodeposited Pt counter electrode showing ununiform distribution of Pt nanoparticles on rough fluorine-doped tin oxide (FTO) coated glass substrates. (C) 2014 Elsevier B.V. All rights reserved.
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