Photoluminescence and Photoacoustic Investigations of Beryllium and Magnesium Containing Wide Gap II-VI Mixed Crystals

Firszt, F.; Łęgowski, S.; Μęczyńska, H.; Sekulska, B.; Szatkowski, J.; Zakrzewski, J.; Paszkowicz, W.

doi:10.12693/aphyspola.95.991

Cited by 4 publications

(2 citation statements)

References 9 publications

(11 reference statements)

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“…Depending on the need and requirement of [24], c [25], d [26], e [27], f [28], g [29], h [30], i [31], j [32]. [24], c [25], d [38], e [39], f [40], g [41], h [42], i [43], j [44]. a particular application, any desired band gap between 0.43 and 2.46 eV can be achieved.…”

Section: The Electronic Propertiesmentioning

confidence: 99%

FP-LMTO study of structural, electronic, thermodynamic and optical properties of MgxCd1−x Se alloys

Bensaid

Ameri

Hanani

et al. 2014

Materials Science-Poland

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Structural, electronic and optical properties of Mg x Cd 1−x Se (0 x 1) are calculated for the first time using density functional theory. Our results show that these properties are strongly dependent on molar fraction of particular componentsx. The bond between Cd and Se is partially covalent and the covalent nature of the bond decreases as the concentration of Mg increases from 0 % to 100 %. It is found that Mg x Cd 1−x Se has a direct band gap in the entire range of x and the band gap of the alloy increases from 0.43 to 2.46 eV with the increase in Mg concentration. Frequency dependent dielectric constants ε 1 (ω), ε 2 (ω) refractive index n(ω) are also calculated and discussed in detail. The peak value of refractive indices shifts to higher energy regions with the increase in Mg. The larger value of the extraordinary refractive index confirms that the material is a positive birefringence crystal. The present comprehensive theoretical study of the optoelectronic properties of the material predicts that it can be effectively used in optoelectronic applications in the wide range of spectra: IR, visible and UV. In addition, we have also predicted the heat capacities (C V ), the entropy (S), the internal energy (U) and the Helmholtz free energy (F) of Mg x Cd 1−x Se ternary alloys.

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Section: The Electronic Propertiesmentioning

confidence: 99%

FP-LMTO study of structural, electronic, thermodynamic and optical properties of MgxCd1−x Se alloys

Bensaid

Ameri

Hanani

et al. 2014

Materials Science-Poland

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“…In Eqs (4) - (6): B is geometric factor which is assumed to be equal for the unknown sample and the standard, S1' is the angle between the Poynting vector and the wave-vector of the incident/scattered beam, dm5, dn' describe the polarization vector of the scattered and incident waves, respectively, ni" is the appropriate refractive index, p is the effective elastooptic tensor, Uk is the component of the atomic displacement vector and q1 is the component of the phonon wave-vector.…”

Section: Resultsmentioning

confidence: 99%

<title>Elastic and elasto-optic properties of Zn<formula><inf><roman>1-x</roman></inf></formula>Be<formula><inf><roman>x</roman></inf></formula>Se mixed crystals by Brillouin scattering method</title>

et al. 2001

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In this paper we report experimental results concerning the elastic and elastooptic properties of Zn1Be,Se mixed crystals grown by high pressure Bridgman technique. Using Brillouin scattering method some of the elastic and elastooptic constants of Zn1 BeSe crystals with different Be content have been determined at room temperature. It has been revealed that the elastic and elastooptic properties strongly depend on the content of Be.

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Ellipsometric, photoluminescence and Auger electron spectroscopy studies of Zn1−xBexSe and Zn1−x−yBexMnySe crystals

Wronkowska¹,

Bukaluk²,

Wronkowski³

et al. 2002

Surface Science

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Photoluminescence and Photoacoustic Investigations of Beryllium and Magnesium Containing Wide Gap II-VI Mixed Crystals

Cited by 4 publications

References 9 publications

FP-LMTO study of structural, electronic, thermodynamic and optical properties of MgxCd1−x Se alloys

FP-LMTO study of structural, electronic, thermodynamic and optical properties of MgxCd1−x Se alloys

<title>Elastic and elasto-optic properties of Zn<formula><inf><roman>1-x</roman></inf></formula>Be<formula><inf><roman>x</roman></inf></formula>Se mixed crystals by Brillouin scattering method</title>

Ellipsometric, photoluminescence and Auger electron spectroscopy studies of Zn1−xBexSe and Zn1−x−yBexMnySe crystals

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