Optical Transitions in ZnSe and CdTe Crystals with Involvement of the Cation d Bands
- Authors: Sobolev V.V.1, Perevoshchikov D.A.1
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Affiliations:
- Udmurt State University
- Issue: Vol 52, No 3 (2018)
- Pages: 287-293
- Section: Electronic Properties of Semiconductors
- URL: https://journals.rcsi.science/1063-7826/article/view/202534
- DOI: https://doi.org/10.1134/S1063782618030211
- ID: 202534
Cite item
Abstract
The permittivity spectra ε1(E) and ε2(E) of ZnSe and CdTe crystals are calculated in the range of 10–25 eV using their experimental reflectance spectra and Kramers–Kronig integral relations. The spectra are decomposed into thirteen and twelve separate transition bands for ZnSe and CdTe, respectively, using the improved nonparametric combined Argand diagram technique. The main spectral parameters, including the maximum energies and halfwidths and oscillator strengths, are determined. The oscillator strengths are found to be within 0.1–1.4 for ZnSe and 0.2–0.7 for CdTe. The obtained ε2(E) bands are due to interband and exciton transitions with the involvement of cation core d bands of both crystals under consideration.
About the authors
V. V. Sobolev
Udmurt State University
Author for correspondence.
Email: sobolev@uni.udm.ru
Russian Federation, Izhevsk, 426034
D. A. Perevoshchikov
Udmurt State University
Email: sobolev@uni.udm.ru
Russian Federation, Izhevsk, 426034