Influence of Free Carrier Concentration on Nonlinear Absorption of n-Type ZnSe Crystals

Sahraoui, B.; Chevalier, Roger A.; Phu, Do Xuan; Rivoire, G.; Bała, W.

doi:10.12693/aphyspola.90.1070

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1998

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“…The band-gap energies of all samples were estimated from measurements of reflection and transmission spectra near to the fundamental absorption edge at different temperatures [4,5]. The temperature dependence of E g for Zn1-x M g…”

Section: Resultsmentioning

confidence: 99%

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Optical Properties of Zn_1-xMg_xSe Epilayers Studied by Spectroscopy Methods

et al. 1998

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Linear optical properties of the Ζn 1 -xΜgx Se (0 < x < 0.4) alloys have been studied using reflectance, spectroscopic ellipsometry and photoluminescence measurements. The refractive indices of Ζn1-xMgxSe epilayers were investigated as a function of Mg composition (0 ≤ x ≤ 0 . 4 ) . T h e e n e r g i e s o f band gap Εg and spin-orbit splitting Eg + Δ, have been determined. These energies are shifted gradually to higher values with increasing Mg content.

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Section: Resultsmentioning

confidence: 99%

“…The photoluminescence and photoreflectivity spectra were measured in the temperature range from 10 to 300 K using a closed cycle cryogenic system (APD-Cryogenic Inc.). Low-temperature reflectance measurements have been performed in backscattering geometry using a 100 W tungsten-halogen lamp as a light source [3,4].…”

Section: Experimental •mentioning

confidence: 99%