A Formation of Hole Pattern on Ti Electrode by Lift-off and Its Application to TCO-less Dye-sensitized Solar Cells

Ti 전극의 Lift-off 공정을 이용한 홀 패턴 형성과 TCO-less 염료감응형 태양전지의 응용

  • Jung, Haeng-Yun (Photonic-Bio Research Center, Korea Photonics Technology Institute) ;
  • Ki, Hyun-Chul (Photonic-Bio Research Center, Korea Photonics Technology Institute) ;
  • Gu, Hal-Bon (Department of Electrical Engineering, Chonnam National University)
  • 정행윤 (한국광기술원 광바이오연구센터) ;
  • 기현철 (한국광기술원 광바이오연구센터) ;
  • 구할본 (전남대학교 전기공학과)
  • Received : 2014.11.05
  • Accepted : 2015.02.02
  • Published : 2015.03.01


In this study, we propose Ti hole pattern structure on the transparent conductive oxide (TCO) less dye-sensitized solar cells (DSSCs) using the lift-off process to improve the low light transmittance and low efficiency caused by opaque Ti electrode. The formation of Ti hole patterns make it possible to move the dye adsorption and electrolyte. The DSSCs with Ti hole patterns showed a higher photoelectric conversion efficiency (PCE) than those with general structure by 11.1%. As a result, The Ti hole pattern structure can be improved to increase the light absorption of the dyes and PCE of the TCO-less DSSCs is also increased.


  1. B. O'Regan and M. Gratzel, Nature, 353, 737 (1991).
  2. A. Kay and M. Gratzel, Sol. Energ. Mat. Sol. C., 44, 99 (1996).
  3. A. Yella, H. W. Lee, H. N. Tsao, C. Yi, A. K. Chandiran, Md. K. Nazeeruddin, E.W.G. Diau, C. Y. Yeh, S. M. Zakeeruddin, and M. Gratzel, Science, 334, 629 (2011).
  4. H. Greijer, L. Karlson, S. T. Lindquist, and A. Hagfeldt, Renewable Energy, 23, 27 (2001).
  5. B. K. Koo, D. Y. Lee, H. J. Kim, W. J. Lee, J. S. Song, and H. J. Kim, Journal of Electroceramics, 17, 79 (2006).
  6. J. K. Kim, K. H. Shin, K. S. Lee, and J. H. Park, Journal of Electrochemical Science and Technology, 1, 81 (2010).
  7. J. Y. Lin, T. J. Chen, and C. K. Hu, Journal of the Chinese Chemical Society, 57, 1176 (2010).
  8. X. Fang, T. Ma, M. Akiyama, G. Guan, S. Tsunematsu, and E. Abe, Thin Solid Films, 472, 242 (2005).
  9. N. Koide, A. Islam, Y. Chiba, and L. Han, J. Photochem. Photobio. A Chem., 182, 296 (2006).