REFRACTIVE PARAMETERS AND BAND ENERGY STRUCTURE OF K2SO4 CRYSTALS DOPED WITH COPPER
Abstract
The potassium sulfate crystals with a copper content of 1.7% were synthesized and their dispersion dependences of the refractive indices ni(λ) and birefringence Δni(λ) were studied. It was found that in the spectral range of 300-700 nm, the dispersion ni(λ) is normal, and the introduction of the impurity leads to a decrease in ni and in the electron polarizability. The band energy structure of the potassium sulfate crystal doped with 1.7% of Cu2+ was calculated. The introduction of an impurity leads to a decrease in the band gap (Eg = 5.3 and 4.9 eV for pure and doped crystals, respectively). The optical functions of doped potassium sulfate crystals were calculated.
About the Authors
V. Yo. Stadnyk
Ivan Franko National University of Lviv
Ukraine
Lviv, 79005
Ukraine
Lviv, 79005
R. B. Matviiv
Ivan Franko National University of Lviv
Ukraine
Lviv, 79005
Ukraine
Lviv, 79005
M. Ya. Rudysh
Ivan Franko National University of Lviv; Jan Dlugosh University
Poland
Lviv, 79005, Ukraine; Częstochowa, 42200, Poland
Poland
Lviv, 79005, Ukraine; Częstochowa, 42200, Poland
R. S. Brezvin
Ivan Franko National University of Lviv
Ukraine
Lviv, 79005
Ukraine
Lviv, 79005
P. A. Shchepanskyi
Ivan Franko National University of Lviv; Jan Dlugosh University
Poland
Lviv, 79005, Ukraine; Częstochowa, 42200, Poland
Poland
Lviv, 79005, Ukraine; Częstochowa, 42200, Poland
B. V. Andrievskii
Politechnika Koszalińska
Poland
Koszalin, 75453
Poland
Koszalin, 75453
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Review
For citations:
Stadnyk V.Y., Matviiv R.B., Rudysh M.Ya., Brezvin R.S., Shchepanskyi P.A., Andrievskii B.V. REFRACTIVE PARAMETERS AND BAND ENERGY STRUCTURE OF K2SO4 CRYSTALS DOPED WITH COPPER. Zhurnal Prikladnoii Spektroskopii. 2020;87(1):163-169. (In Russ.)
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