| 학회 |
한국화학공학회 |
| 학술대회 |
2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 |
17권 1호, p.541 |
| 발표분야 |
에너지 |
| 제목 |
Transferred vertically aligned N-doped carbon nanotube array: use in dye-sensitized solar cells as counter electrodes |
| 초록 |
Typically, counter electrodes in DSSCs have been prepared by Pt vacuum deposition or thermal annealing of a Pt precursor on a transparent conductive oxide (TCO) substrate to reduce the overpotential for reduction of I3- to I- in redox electrolytes. Because Pt is one of the most expensive components in DSSCs, the development of finding alternative materials for the development of Pt-free DSSCs is expected to reduce the production cost for DSSCs. CNTs are considered a promising candidate with excellent electrochemical catalytic activities and high electrical conductivities. However, the CNTs used in most approaches were entangled and randomly oriented, which can significantly deteriorate the performance of CNT electrode. In this study, we demonstrate that vertically aligned nitrogen doped CNT counter electrodes can be employed in DSSCs via a ‘growth-detachment-transfer’ process. The transferred N-doped VA-CNT power conversion efficiency was 7.04%, while that of a reference DSSC with a conventional Pt/TCO counter electrode was 7.34%. |
| 저자 |
이건석1, 이원준2, 박남규1, 김상욱2, 박종혁1
|
| 소속 |
1성균관대, 2KAIST |
| 키워드 |
dye sensitized solar cell; carbon nano tube; counter electrode
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
