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Fabrication and characterization of carbon-based counter electrodes prepared by electrophoretic deposition for dye-sensitized solar cells

Hyunkook Kim, Hyonkwang Choi, Sookhyun Hwang, Youngjoo Kim and Minhyon Jeon*

Author affiliations

Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University, Gimhae, Gyungnam, 621-749, Republic of Korea

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Citation and License

Nanoscale Research Letters 2012, 7:53  doi:10.1186/1556-276X-7-53

Published: 5 January 2012

Abstract

Three different carbon-based counter electrodes are investigated in light of catalytic activities such as electrochemical frequencies and interface impedances. We fabricated carbon-based counter electrodes of dye-sensitized solar cells [DSSCs] using graphene, single-walled carbon nanotubes [SWNTs], and graphene-SWNT composites by electrophoretic deposition method. We observed the optical and electrochemical properties of the carbon-based counter electrodes. The DSSC with the graphene-deposited counter electrode demonstrated the best conversion efficiency of 5.87% under AM 1.5 and 1 sun condition. It could be utilized for a low-cost and high-throughput process for DSSCs.

Keywords:
dye-sensitized solar cells; counter electrodes; graphene; single-walled carbon nanotubes; electrophoretic deposition.