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Three Non-Steady-State Photo-EMF Excitation Modes in a Gallium Oxide Crystal

Bulletin of the Lebedev Physics Institute volume 49, pages 67–73 (2022)Cite this article

Abstract

This paper presents the results of measurements of the non-steady-state photo-emf in a monoclinic Ga2O3 crystal at a laser wavelength of 457 nm. The crystal has insulating properties and shows high transparency for visible light, which does not prevent the formation of the dynamic space-charge grating and non-steady-state photo-emf signal recording in external (null, dc, and ac) electric fields. The measured signal amplitude is analyzed as a function of the phase modulation frequency, spatial frequency of the interference pattern, and the electric field. The crystal photoconductivity, spectral sensitivity, and diffusion length of photoexcited carriers are determined for the chosen wavelength.

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REFERENCES

  1. Pearton, S.J., Yang, J., Cary IV, P.H., Ren, F., Kim, J., Tadjer, M.J., and Mastro, M.A., A review of Ga2O3 materials, processing, and devices, Appl. Phys. Rev., 2018, vol. 5, p. 011301. https://doi.org/10.1063/1.5006941

  2. Stepanov, S.I., Nikolaev, V.I., Bougrov, V.E., and Romanov, A.E., Gallium OXIDE: Properties and applications – a review, Rev. Adv. Mater. Sci., 2016, vol. 44, pp. 63–86.

    Google Scholar 

  3. Feng, P., Zhang, J.Y., Li, Q.H., and Wang, T.H., Individual β-Ga2O3 nanowires as solar-blind photodetectors, Appl. Phys. Lett., 2006, vol. 88, p. 153107. https://doi.org/10.1063/1.2193463

  4. Oshima, T., Okuno, T., Arai, N., Suzuki, N., Ohira, S., and Fujita, S., Vertical solar-blind deep-ultraviolet Schottky photodetectors based on β-Ga2O3 substrates, Appl. Phys. Express, 2008, vol. 1, no. 1, p. 011202. https://doi.org/10.1143/APEX.1.011202

  5. Petrov, M.P., Stepanov, S.I., and Khomenko, A.V., Photorefractive Crystals in Coherent Optical Systems, Springer Series in Optical Sciences, vol. 59, Berlin: Springer, 1991. https://doi.org/10.1007/978-3-540-47056-4

  6. Stepanov, S., Photo-electromotive-force effect in semiconductors, Handbook of Advanced Electronic and Photonic Materials and Devices, Academic Press, 2001, vol. 2, pp. 205–272.

  7. Sokolov, I.A. and Bryushinin, M.A., Optically Induced Space-Charge Gratings in Wide-Bandgap Semiconductors: Techniques and Applications, Nova Science, 2017, pp. 1–229.

  8. Bryushinin, M.A., Sokolov, I.A., Pisarev, R.V., and Balbashov, A.M., Space-and-time current spectroscopy of a β-Ga2O3 crystal, Opt. Express, 2015, vol. 23, no. 25, p. 32736. https://doi.org/10.1364/OE.23.032736

    Article  ADS  Google Scholar 

  9. Bryushinin, M.A., Kulikov, V.V., Petrov, A.A., Sokolov, I.A., Romashko, R.V., and Kulchin, Y.N., Non-steady-state photo-EMF in β-Ga2O3 crystals at λ = 457 nm, Opt. Express, 2020, vol. 28, no. 26, p. 39067. https://doi.org/10.1364/OE.413482

    Article  ADS  Google Scholar 

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Funding

The study was supported by the Russian Science Foundation (project no. 19-12-00323).

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Authors and Affiliations

  1. Ioffe Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    M. A. Bryushinin & I. A. Sokolov

  2. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    I. N. Zavestovskaya

  3. National Research Nuclear University MEPhI, 115409, Moscow, Russia

    I. N. Zavestovskaya & Yu. N. Kulchin

  4. Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, 690041, Vladivostok, Russia

    R. V. Romashko & Yu. N. Kulchin

  5. Far Eastern Federal University, 690922, Vladivostok, Russia

    R. V. Romashko & Yu. N. Kulchin

Authors
  1. M. A. Bryushinin
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  2. I. A. Sokolov
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  3. I. N. Zavestovskaya
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  4. R. V. Romashko
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  5. Yu. N. Kulchin
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Correspondence to I. A. Sokolov.

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The authors declare that they have no conflicts of interest.

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Translated by A. Kazantsev

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Bryushinin, M.A., Sokolov, I.A., Zavestovskaya, I.N. et al. Three Non-Steady-State Photo-EMF Excitation Modes in a Gallium Oxide Crystal. Bull. Lebedev Phys. Inst. 49, 67–73 (2022). https://doi.org/10.3103/S1068335622030022

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  • DOI: https://doi.org/10.3103/S1068335622030022

Keywords:

  • non-steady-state photo-emf
  • adaptive photodetector