Title of article
Optical properties of image revealed by ab initio calculations Original Research Article
Author/Authors
Gboyega A. Adebayo، نويسنده , , Bede C. Anusionwu، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
4
From page
1690
To page
1693
Abstract
Detailed optical functions and optical properties of a α-monoclinicα-monoclinic phase of Selenium (α-Se)(α-Se) are presented over a wide range of angular frequencies ωω by first-principles calculations. An optical band gap of 2.05 eV and a mobility gap of 2.17 eV±0.05 are observed in the present calculations. The imaginary part of the dielectric function has been obtained from the frequency dependent dielectric matrix and the use of the Kramers–Kronig (KK) relation allows us to determine the real part of the dielectric function. Optical functions and optical properties revealed the occurrence of a long range order in Se. For the first time, infrared and absorption spectra of monoclinic-Se were studied using the Kramers–Kronig (KK) relation by ab initio method. Finally, detailed studies of other dielectric related optical constants such as reflectivity, transmission, reflection and absorption coefficients were also presented.
Keywords
D. Electronic structure
Journal title
Journal of Physics and Chemistry of Solids
Serial Year
2010
Journal title
Journal of Physics and Chemistry of Solids
Record number
1311207
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