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Energy Relaxation of Electrons in InGaN Quantum Wells

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Abstract

In this study, electron energy relaxation mechanisms in HEMT structures with different In x Ga1−x N-channel quantum well (QW) widths are investigated. Theoretical value of the inelastic scattering rates is carried out at electron temperatures between 30 K (−243 °C) < T e < 700 K (427 °C). We used both the experimentally determined and calculated electron temperatures to estimate the energy relaxation rates of non-equilibrium electrons. In wide InGaN QWs, power loss of an electron is shown to be significantly smaller than that in the narrower QWs.

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Acknowledgments

This work is supported by the State Planning Organization of Turkey under Grant No. 2001K120590, by the European Union under the projects EU-PHOME and EU-ECONAM, and TUBITAK under the Project Nos. 106E198, 107A004, 107A012, and 113F277. One of the authors (Ekmel Ozbay) acknowledges partial support from the Turkish Academy of Sciences. Authors, (Beyza Sarikavak-Lisesivdin and Sefer Bora Lisesivdin) acknowledge partial support from the TUBITAK 2219 numbered scholarships. We would like to thank the NANOTAM engineers for their help.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Gazi University, Teknikokullar, 06500, Ankara, Turkey

    Beyza Sarikavak-Lisesivdin (Lecturer), Sefer Bora Lisesivdin (Associate Professor), Gokhan Atmaca ( PhD Student) & Polat Narin ( PhD Student)

  2. School of Computer Science and Electronic Engineering, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, U.K.

    Beyza Sarikavak-Lisesivdin (Lecturer), Sefer Bora Lisesivdin (Associate Professor) & Naci Balkan (Professor)

  3. Department of Physics, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Turkey

    Naci Balkan (Professor)

  4. Nanotechnology Research Center, Bilkent University, 06800, Bilkent, Ankara, Turkey

    Huseyin Cakmak (Research Engineer) & Ekmel Ozbay (Professor)

  5. Department of Physics, Department of Electrical and Electronics Engineering, Bilkent University, 06800, Bilkent, Turkey

    Ekmel Ozbay (Professor)

Authors
  1. Beyza Sarikavak-Lisesivdin
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  2. Sefer Bora Lisesivdin
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  3. Naci Balkan
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  4. Gokhan Atmaca
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  5. Polat Narin
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  6. Huseyin Cakmak
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  7. Ekmel Ozbay
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Correspondence to Beyza Sarikavak-Lisesivdin.

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Manuscript submitted April 16, 2014.

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Sarikavak-Lisesivdin, B., Lisesivdin, S.B., Balkan, N. et al. Energy Relaxation of Electrons in InGaN Quantum Wells. Metall Mater Trans A 46, 1565–1569 (2015). https://doi.org/10.1007/s11661-015-2762-2

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