• 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