Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Materials Science Poland

1 2019

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: different orientations

Sortuj według:

Ogranicz wyniki do:

Estimation of optical parameters of silicon single crystals with different orientations

El-Nahass M. M., Ali H. A. M.

Materials Science Poland

2019

Vol. 37, No. 1

65--70

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 Eo, dispersion energy Ed, high frequency dielectric constant ϵ∞, lattice dielectric constant ϵL and electronic polarizability αe were estimated. The real ϵ1 and imaginary ϵ2 parts of dielectric constant were also determined.