Enhanced performance of a dye-sensitized solar cell with an electrodeposited-platinum counter electrode
- Authors
- Yoon, Chang Ho; Vittal, R.; Lee, Jiwon; Chae, Won-Seok; Kim, Kang-Jin
- Issue Date
- 15-2월-2008
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- electrodeposited-Pt counter electrode; thermal and sputter depositions; active surface area; charge transfer resistance; dye-sensitized solar cell
- Citation
- ELECTROCHIMICA ACTA, v.53, no.6, pp.2890 - 2896
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 53
- Number
- 6
- Start Page
- 2890
- End Page
- 2896
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124079
- DOI
- 10.1016/j.electacta.2007.10.074
- ISSN
- 0013-4686
- Abstract
- A counter electrode was prepared for a dye-sensitized solar cell (DSSC) through electrochemical deposition of mesoporous platinum on fluorine-doped tin oxide glass in the presence of a structure-directing nonionic surfactant, octaethylene glycol monohexadecyl ether (C16EO8). The DSSC fabricated with the electrochemically deposited Pt (ED-Pt) counter electrode tendered a higher solar-to-electricity conversion efficiency of 7.6%, compared with approximately 6.4% of the cells fabricated with the sputter-deposited or most commonly-employed thermal deposited Pt counter electrodes. This enhanced efficiency is attributed to the higher short-circuit photocurrent arising from the increases in the active surface area and light reflection as well as the decrease in the sheet resistance of the ED-Pt film, relative to those of the Pt films prepared by the other two deposition methods. The sputter-deposited Pt film yielded almost the same photovoltaic characteristics as the thermal deposited Pt film. The Pt films were characterized by FE-SEM, AFM, cyclic voltammetry, chronoamperometry, electrochemical impedance spectroscopy, sheet resistance measurements, adhesion tests, and light reflection tests. (C) 2007 Elsevier Ltd. All rights reserved.
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