Estimation of optical parameters of silicon single crystals with different orientations

• Autorzy: El-Nahass M. M. , Ali H. A. M.

Identyfikatory

DOI

10.2478/msp-2019-0003

• Języki publikacji: EN

Abstrakty

EN

Optical properties of Si single crystals with different orientations (1 0 0) and (1 1 1) were investigated using spectrophotometric measurements in a spectral range of 200 nm to 2500 nm. The data of optical absorption revealed an indirect allowed transition with energy gap of 1.1 ± 0.025 eV. An anomalous dispersion in addition to a normal dispersion was observed in the spectra of refractive index. The normal dispersion of the refractive index was discussed according to Wemple-DiDomenico single oscillator model. The oscillator energy E_o, dispersion energy E_d, high frequency dielectric constant ϵ_∞, lattice dielectric constant ϵ_L and electronic polarizability αe were estimated. The real ϵ₁ and imaginary ϵ₂ parts of dielectric constant were also determined.

Słowa kluczowe

EN

single crystals; different orientations; optical parameters

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2019
• Tom: Vol. 37, No. 1
• Strony: 65--70
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

El-Nahass M. M.

• Department of Physics, Faculty of Education, Ain Shams University, Roxy 11757, Cairo, Egypt

autor

Ali H. A. M.

• Department of Physics, Faculty of Education, Ain Shams University, Roxy 11757, Cairo, Egypt

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).