염료감응형 태양전지의 탄소나노튜브 상대전극의 광투과도와 전기화학적 특성이 에너지 변환 효율에 미치는 영향 = Effect of Electrochemical Properties and Optical Transmittance of Carbon Nanotubes Counter Electrodes on the Energy Conversion Efficiency of Dye-sensitized Solar Cells

다국어 초록 (Multilingual Abstract)

In this work, electrochemical characteristics and optical transmittance of carbon nanotubes (CNTs) counter electrodes which had different amount of CNTs in CNTs slurries were analyzed. Two-step heat treatment processes were applied to achieve well-fabricated CNTs electrode. Three sets of CNTs electrodes and dye-sensitized solar cells (DSSCs) with CNTs counter electrodes were prepared. As the amount of CNTs increased, sheet resistance of CNTs electrode decreased. CNTs electrode with low sheet resistance had low electrochemical impedance and fast redox reaction. On the other hand, in case of CNTs counter electrode with low density of CNTs, performance of the dye-sensitized solar cell was improved due to its high optical transmittance. We found that the transmittance of CNTs counter electrode influence the performance of dye-sensitized solar cells.

참고문헌 (Reference)

1 B. O’Regan, 353 : 737-, 1991

2 J. Yoon, 11 : 15-, 2008

3 S. Nakade, 106 : 10004-, 2002

4 Y. Chiba, 45 : 638-, 2006

5 S. Ito, 516 : 4613-, 2008

6 W. J. Lee, 1 : 1145-, 2009

7 J. G. Nam, 62 : 148-, 2010

8 J. Han, 4 : 3503-, 2010

9 J. Bonard, 73 : 7-, 1998

10 J. E. Trancik, 8 : 982-, 2008

11 Md. K. Nazeeruddin, 107 : 8981-, 2003

12 E. Ramasamy, 10 : 1087-, 2008

13 M. Kang, 46 : 1509-, 2010

14 C. C. Ting, 87 : 2500-, 2010

15 T. Ma, 574 : 77-, 2004

16 L. Han, 84 : 2433-, 2004

17 L. Han, 86 : 213501-, 2005

18 L. Han, 9 : 645-, 2006

19 K. Mizuno, 106 : 6044-, 2008

20 이원재, "Spray-coated Carbon Nanotube Counter Electrodes for Dye-sensitized Solar Cells" 한국전기전자재료학회 6 (6): 140-143, 2005

21 S. I. Cha, "Pt-free transparent counter electrodes for dye-sensitized solar cells prepared from carbon nanotube micro-balls" ROYAL SOC CHEMISTRY 20 : 659-662, 2010