Correlation between optical and thermal properties in ZnMgSe solid solutions

• Published in: Materials chemistry and physics 2017-01, Vol.186, p.541-545
• Main Authors: Derkowska-Zielinska, B., Strzalkowski, K., Skowronski, L., Zakrzewski, J., Pawlak, M., Firszt, F.
• Format: Article
• Language: English
• Subjects: Band gap; Bridgman method; Crystal growth; Energy gap; Heat conductivity; Mixed crystals; Optical properties; Photopyroelectric technique; Refractivity; Solid solutions; Spectroellipsometry; Spectroscopic ellipsometry; Thermal conductivity; Thermal properties; Thermal response; Thermodynamic properties; Zn1−xMgxSe
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2016.11.034

The correlation between the optical (such as complex refractive index, energy band gap) and thermal (such as diffusivity, effusivity and conductivity) properties of Zn1−xMgxSe (with 0 ≤ x ≤ 0.50) crystals are presented. The Zn1−xMgxSe mixed crystals were grown by the modified high-pressure Bridgman method and were studied using spectroscopic ellipsometry as well as photopyroelectric technique. We found that when Mg content in Zn1−xMgxSe increases the value of Eg increases. Moreover, the values of thermal conductivity and refractive index of studied materials decrease with increasing Mg content in Zn1−xMgxSe. Therefore, from the performed measurements, one can conclude that the incorporation of Mg as constituent into ZnSe crystals plays a crucial role in the observed optical and thermal response. •Incorporation of Mg into ZnSe crystals plays a crucial role in properties.•Refractive index decreases when Mg content introduced into Zn1−xMgxSe increases.•Thermal properties decrease when the Mg content introduced into Zn1−xMgxSe increases.•Energy band gap increases when Mg content introduced into Zn1−xMgxSe increases.