| 학회 |
한국재료학회 |
| 학술대회 |
2008년 봄 (05/22 ~ 05/23, 상록리조트) |
| 권호 |
14권 1호 |
| 발표분야 |
에너지환경/생체재료 |
| 제목 |
Temperature dependence of a CNT based counter electrode for electrochemical properties of dye-sensitized solar cell |
| 초록 |
In order to improve the electrochemical property of the CNT electrode, the rapid thermal annealing (RTA) treatments on the carbon nanotubes (CNTs) as counter electrode are carried out in the range of temperature 600 ℃ ~ 1100 ℃ for 1 min in the N2 atmosphere. The CNTs on p-type Si substrate are grown by CVD. The growth temperature is 900 ℃ with C2H2 and NH3 gases. The structural of CNTs are investigated by field-emission scanning electron microscopy (FE-SEM), transmission electron microscope (TEM), Raman spectroscopy. In the raman spectrum, the annealed CNTs have decreased defect and amorphous carbon, and the I(D)/I(G) ratio of annealed CNTs is considerably decreased. In this study, it is found that annealing treatment of CNTs is effected on properties of it. And EIS measured that, the redox reaction frequency of annealed CNT electrode at 1100 ℃ is about 4 kHz and unannealed CNT is about 0.4 kHz. The total resistivity of the annealed electrode has much lower at the interface. It is found that the annealed MWNTs have the better performance as electrode material for DSSCs. |
| 저자 |
S.K. Lee1, C.M. Shin2, S.R. Lee1, G.C. Kim2, J.H. Moon1, D.Y. Lee2, M.H. Jeon1
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| 소속 |
1Department of Nano system engineering, 2center for Nano Manufacturing Inje Univ. |
| 키워드 |
CNT electrode; electrochemical property; annealing treatment; CVD; DSSC
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| E-Mail |
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