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Electrooptic effect of water in electric double layer at interface of GaN electrode

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Abstract

We determined the Pockels constant of water in the electric double layer (EDL) at the GaN electrode interface. For a positive (negative) bias, the difference transmittance showed a blue (red) shift in the interference fringes in the visible. This was caused by a negative (positive) refractive index change both in the EDL of water and in the space charge layer (SCL) of the GaN. The latter was associated with the blue shift in the absorption edge in the UV due to the band population effect in the GaN. The voltage drops took place within the interfacial layer at a ratio of about 3: 1 for the SCL vs EDL at the modulation frequency of f = 20 Hz, estimated from the frequency dependence of the impedance. The Pockels constant of water in the EDL was determined to be r 13 = 0:63 × 100 pm/V for the GaN electrodes. This is three times smaller than that at the surface of the indium tin oxide (ITO) electrode.

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References

  1. G. E. Brown, Jr., V. E. Henrich, W. H. Casey, D. L. Clark, C. Eggleston, A. Felmy, D. W. Goodman, M. Grätzel, G. Maciel, M. I. McCarthy, K. H. Nealson, D. A. Sverjensky, M. F. Toney, and J. M. Zachara: Chem. Rev. 99 (1999) 77.

    Article  Google Scholar 

  2. Y. Nosaka, M. Hirabayashi, T. Kobayashi, and E. Tokunaga: Phys. Rev. B 77 (2008) 241401.

    Article  ADS  Google Scholar 

  3. M. F. Toney, J. N. Howard, J. Richer, G. L. Borges, J. G. Gordon, O. R. Melroy, D. G. Wiesler, D. Yee, and L. B. Sorensen: Surf. Sci. 335 (1995) 326.

    Article  ADS  Google Scholar 

  4. K. Fujii and K. Ohkawa: Electrochem. Soc. 153 (2006) A468.

    Article  Google Scholar 

  5. E. Tokunaga, Y. Nosaka, M. Hirabayashi, and T. Kobayashi: Surf. Sci. 601 (2007) 735.

    Article  ADS  Google Scholar 

  6. R. Williams: Phys. Rev. 117 (1960) 1487.

    Article  ADS  Google Scholar 

  7. N. Ishii, E. Tokunaga, S. Adachi, T. Kimura, H. Matsuda, and T. Kobayashi: Phys. Rev. A 70 (2004) 023811.

    Article  ADS  Google Scholar 

  8. N. Bottka, D. L. Jhonson, and R. Glosser: Phys. Rev. B 15 (1977) 2184.

    Article  ADS  Google Scholar 

  9. R. Glosser and B. O. Seraphin: Phys. Rev. 187 (1969) 1021.

    Article  ADS  Google Scholar 

  10. M. Kobiyama: Theory of Optical Thin Films (Optronics, Tokyo, 2003) 2nd ed., p. 83 [in Japanese].

    Google Scholar 

  11. Electrochemical Measurement Manual, ed. Electrochemical Society of Japan, (Maruzen, Tokyo, 2002), p. 95 [in Japanese].

    Google Scholar 

  12. J. R. Macdonald: Ann. Biomed. Eng. 20 (1992) 289, and references therein.

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8601, Japan

    Hironori Kanemaru, Yugo Nosaka & Eiji Tokunaga

  2. Department of Applied Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8601, Japan

    Akira Hirako & Kazuhiro Ohkawa

  3. Department of Applied Physics and Chemistry, Faculty of Electro-Communications, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan

    Takayoshi Kobayashi

  4. Research Center for Green Photo-Science and Technology, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8601, Japan

    Eiji Tokunaga

Authors
  1. Hironori Kanemaru
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  2. Yugo Nosaka
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  3. Akira Hirako
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  4. Kazuhiro Ohkawa
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  5. Takayoshi Kobayashi
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  6. Eiji Tokunaga
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Correspondence to Eiji Tokunaga.

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Kanemaru, H., Nosaka, Y., Hirako, A. et al. Electrooptic effect of water in electric double layer at interface of GaN electrode. OPT REV 17, 352–356 (2010). https://doi.org/10.1007/s10043-010-0064-x

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  • DOI: https://doi.org/10.1007/s10043-010-0064-x

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