Determining the Concentration of Free Electrons in n-InSb from Far-Infrared Reflectance Spectra with Allowance for Plasmon–Phonon Coupling
- 作者: Belova I.1, Belov A.2, Kanevsky V.2, Lysenko A.3
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隶属关系:
- Moscow Technological University
- AO Giredmet
- National Research University Higher School of Economics
- 期: 卷 52, 编号 15 (2018)
- 页面: 1942-1946
- 栏目: Electronics Materials
- URL: https://journals.rcsi.science/1063-7826/article/view/205201
- DOI: https://doi.org/10.1134/S1063782618150034
- ID: 205201
如何引用文章
详细
Contactless nondestructive testing is a means for determining the concentration of free electrons N in indium antimonide (InSb) samples from far-infrared reflectance spectra recorded at room temperature. A computer program capable of determining the characteristic wave number from the Kramers–Kronig relation is developed. The calculated calibration dependence makes it possible to determine the electron concentration from the known characteristic wave number. It is shown that this dependence is described by a cubic polynomial. In the calculations, the energy dependence of the electron effective mass is taken into account. It is established that, in determining the electron concentration, account must be taken of plasmon–phonon coupling, specifically at N ≤ 5 × 1017 cm–3. The systematic error introduced into the determination of N by disregard of plasmon–phonon coupling is estimated. The software elaborated here makes it possible to calculate the electron concentration N from experimental reflectance spectra and to store and process the results. The software is tested by the example of the reflectance spectrum of heavily doped n-InSb.
作者简介
I. Belova
Moscow Technological University
Email: aplysenko@hse.ru
俄罗斯联邦, Moscow, 117292
A. Belov
AO Giredmet
Email: aplysenko@hse.ru
俄罗斯联邦, Moscow, 119017
V. Kanevsky
AO Giredmet
Email: aplysenko@hse.ru
俄罗斯联邦, Moscow, 119017
A. Lysenko
National Research University Higher School of Economics
编辑信件的主要联系方式.
Email: aplysenko@hse.ru
俄罗斯联邦, Moscow, 101000