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http://dx.doi.org/10.4313/TEEM.2005.6.5.238

Characteristics of Nano-crystalline TiO2 Dye-sensitized Solar Cells having Counter Electrodes with Different Preparing Process  

Lee, Dong-Yoon (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Koo, Bo-Kun (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Kim, Hyun-Ju (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Lee, Won-Jae (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Song, Jae-Sung (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Kim, Hee-Jae (Lab. Of Laser and Sensor application, Pusan National University)
Publication Information
Transactions on Electrical and Electronic Materials / v.6, no.5, 2005 , pp. 238-242 More about this Journal
Abstract
The Pt counter electrode of a dye-sensitized solar cell (DSSC) plays a role in helping redox reaction of iodine ions in electrolyte, also, transferring electrons into electrolyte. In this case, it is expected that characteristics of Pt electrodes strongly depend on fabrication process and its surface condition. In this study, Pt electrodes were prepared by a electro-deposition and a RF magnetron sputtering. Electrochemical behavior of Pt electrodes was compared using cyclic-voltammetry and impedance spectroscopy. Surface morphology of Pt electrodes was investigated by FE-SEM and AFM. I-V characteristics of DSSC were measured and discussed in association with the surface properties of counter electrode. As a result, electrochemical properties of electro-deposited Pt electrode were superior to that of sputtered Pt electrode. This is likely that enlarged area of surface in electro-deposited Pt electrode in comparison with the case of sputtered Pt electrode playa role in enhancing such electrochemical properties.
Keywords
Dye-sensitized solar cell; Pt counter electrode; Cyclic voltammetry; Impedance spectroscopy;
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