| 학회 |
한국재료학회 |
| 학술대회 |
2008년 봄 (05/22 ~ 05/23, 상록리조트) |
| 권호 |
14권 1호 |
| 발표분야 |
에너지환경/생체재료 |
| 제목 |
Comparative Analysis of properties of MWCNTs grown on Si substrate with different conductivity for using counter electrodes in DSSC |
| 초록 |
The electrochemical and structural properties of multi-walled carbon nanotubes (MWNTs) for using counter electrode in dye-sensitized solar cell (DSSC) were studied. The MWNTs were synthesized on Si substrate with different conductivities. One substrate had the conductivity about 0.05 (Ω∙cm)-1 and the other substrate had the conductivity about 200 (Ω∙cm)-1. Thermal chemical vapor deposition (CVD) was utilized for the synthesis of MWNTs using a Fe catalyst. The hall measurement for doping level of the substrate was carried out by Four-probe station method. The structural properties of MWNTs were investigated by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and Raman spectroscopy. The electrochemical properties of MWNTs were measured by electrochemical impedance spectroscopy (EIS). In the result of SEM measurement, the diameter of the MWNTs on high doped Si substrate was larger than that of the MWNTs on the low doped Si. In EIS spectrum, the redox reaction frequency of the MWNTs on high doped substrate was about 2 kHz and that of the MWNTs on low doped substrate was about 0.8 kHz. In this study, we found that the electrochemical properties of the MWNTs on high doped substrate were superior to that of the MWNTs on low doped substrate. |
| 저자 |
G. C. Kim1, S. K. Lee2, J. H. Moon1, D.H. Kim2, D. Y. Lee1, M. H. Jeon2
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| 소속 |
1Department of Nano system engineering, 2center for Nano Manufacturing Inje Univ. |
| 키워드 |
electrochemical and structural property; MCNTs; conductivity; counter electrode; DSSC
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| E-Mail |
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