Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Effect of Wet Etching Time on the Surface Roughness and Electrical and Optical Properties of ZnO, and Al-doped ZnO Films

ZnO와 Al-doped ZnO 박막의 표면 형상과 전기·광학적 특성에 미치는 Wet Etching 시간의 영향

  • Kim, Min-Sung (Department of Information & Communications Engineering, TongMyong University)
  • 김민성 (동명대학교 정보통신공학과)
  • Received : 2013.01.21
  • Accepted : 2013.02.04
  • Published : 2013.03.01
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Abstract

We investigated the effect of etching time on the surface roughness, and electrical and optical properties of ZnO and 2 wt% Al-doped ZnO (AZO) films. The ZnO and AZO films were deposited on glass substrates by RF magnetron sputtering technique. The etching experiment was carried out using a solution of 5% HCl at room temperature. The surface roughness was characterized by Atomic Force Microscopy. The electrical property was measured by Hall measurement system and 4-point probe. The optical property was characterized by UV-vis spectroscopy. After the wet chemical etching, the surface textures were obtained on the surface of the ZnO and AZO films. With the increase of etching time, the surface roughness (RMS) of the films increased and the transmittance of the films was observed to decrease. For the AZO film, a low resistivity of $1.0{\times}10^{-3}\;{\Omega}{\cdot}cm$ was achieved even after the etching.

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References

  1. C. G. Granqvist, and A. Hultaker, Thin Solid Films, 411, 1 (2002). https://doi.org/10.1016/S0040-6090(02)00163-3
  2. K. A. Sierros, N. J .morris, S. N. Kukureka, and D. R. Cairns, Wear, 267, 625 (2009). https://doi.org/10.1016/j.wear.2008.12.042
  3. L. Raniero, I. Ferreira, A. Pimentel, A. Goncalves, P. Canhola, E. Fortunato, and R. Martins, Thin Solid Films, 511, 295 (2006).
  4. T. Minami, Thin Soloid films, 516, 5822 (2008). https://doi.org/10.1016/j.tsf.2007.10.063
  5. M. F. A. M. Hest, M. S .Dabney, J. D. Perkins, and D. S. Ginley, Thin Solid Films, 496, 70 (2006). https://doi.org/10.1016/j.tsf.2005.08.314
  6. M. Nisha, S. Anusha, A. Antony, R. Manoj, and M. K. Jayaraj, Appl. Surf. Sci., 252, 1430 (2005). https://doi.org/10.1016/j.apsusc.2005.02.115
  7. T. Hitosugi, A. Ueda, S. Nakao, N. Yamada, Y. Furubayashi, Y. Hirose, T. Shimada, and T. Hasegawa, Appl. Phys. Lett., 90, 212106 (2007). https://doi.org/10.1063/1.2742310