| 학회 |
한국재료학회 |
| 학술대회 |
2007년 가을 (11/02 ~ 11/02, 성균관대학교) |
| 권호 |
13권 2호 |
| 발표분야 |
에너지환경재료 |
| 제목 |
Characteristics of dye-sensitized solar cells using heat treated multi-walled CNT counter electrode |
| 초록 |
Studies on dye-sensitized solar cells have been intensively carried out until now. We recently reported the electrochemical properties using carbon nanotubes (CNTs) grown on p-type Si substrate as the counter electrode. In order to measure the electrochemical properties and energy conversion efficiency of the CNT electrode itself, we prepare the CNTs paste on F-doped SnO2 (FTO) glass using CNTs powder, de-ionized water and CMC (Carboxyl Methyl Cellulous). CNTs are synthesized by thermal chemical vapor deposition at 900 ℃ and iron nanoparticles are used as catalysts for growing multi-walled CNTs. In order to improve redox reaction, the rapid thermal annealing (RTA) treatments on the CNTs are carried out at the growth temperature. In the result of electrochemical properties, the total resistivity of CNTs on the FTO substrate is much lower than that of CNTs on Si substrate at the interface and also, the response time of reaction is faster. In case of FTO substrate, we can observe only a single semi circle in nyquist plot. We can evaluate electrochemical properties of CNT electrode itself and it is measure that the FTO sample demonstrates over 60 % of the fill factor (FF) and higher 3% of the energy conversion efficiency. |
| 저자 |
문준희1, 황숙현2, 이수경1, 김금채2, 김도현1, 이동윤2, 전민현1
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| 소속 |
1인제대, 2매뉴팩쳐링 (연) |
| 키워드 |
dye-sensitized solar cell; RTA; carbon nanotubes; counter electrode
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| E-Mail |
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