Optimal series-parallel connection method of dye-sensitized solar cell for Pt thin film deposition using a radio frequency sputter system

Jin Young Choi, Ji Tae Hong, Hyunwoong Seo, Mijeong Kim, Min Kyu Son, Kyoung Jun Lee, Dong Yoon Lee, Hee Je Kim

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12 Citations (Scopus)

Abstract

The counter electrode widely used in DSC (Dye-sensitized solar cells) is constructed of a conducting glass substrate coated with a Pt film, in which the platinum acts as a catalyst. The characteristics of the platinum electrode depend strongly on the fabrication process and the electrode's surface condition. In this study, Pt counter electrodes were deposited by radio frequency (RF) sputtering with 6.7 × 10- 1 Pa Ar, RF power of 120 W and substrate temperature of 100 °C. The surface morphology of Pt electrodes was investigated using field emission scanning electron microscopy and atomic force microscopy. Comparison of samples prepared by RF sputtering and RF magnetron sputtering showed that the surface of the RF sputter deposited electrode had a larger surface area resulting in more effective catalytic characteristics. Finally, an open voltage of 4.8 V, a short circuit current of 569 mA and a photoelectric conversion efficiency of approximately 3.6% were achieved for cells composed of 30 DSC units of 6 cm × 4 cm DSC units with 6 cells in series and 5 cells in parallel.

Original languageEnglish
Pages (from-to)963-966
Number of pages4
JournalThin Solid Films
Volume517
Issue number2
DOIs
Publication statusPublished - Nov 28 2008

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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