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The contactless non-destructive method makes possible the determination of the concentration of free electrons in the indium antimonide samples by room temperature far infrared reflection spectra. The computer program, giving the possibility to determine the wave number characteristic values with the help of the Kramers-Kronig relations, has been developed. The rated calibrated dependence for the electron concentration determination by the wave number characteristic value has been calculated. It has been shown that this dependence is described by cubic polynomial. While calculating the dependence of the electron effective mass on the energy has been taken into account. It has been determined that in defining the electrons concentration it is necessary to take into account the plasmon-phonon interaction, especially for N £ 5·10 см values. The estimation of the systematic error of defining N , which appears, if Plasmon-phonon coupling is neglected, has been executed. The developed software program permits by the experimentally measured reflection spectra to calculate the values of the N electron concentration, to store and process the obtained results. The program has been tested on an example of the sample reflection spectrum of heavily doped n -InSb.
  • Published in: Materialy elektroniki
  • Bibliography link: Белова И.М., Белов А.Г., Каневский В.Е., Лысенко А.П. Определение концентрации свободных электронов в n -InSb по спектрам отражения в дальней инфракрасной области с учетом плазмон-фононного взаимодействия // Изв. вузов. Электроника. - 2017. - Т.22. - №3. - С. 201-210. DOI: 10.24151/1561-5405-2017-22-3-201-210

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