(JNTM) مجلة التكنولوجيا الجديدة والمواد

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Browsing (JNTM) مجلة التكنولوجيا الجديدة والمواد by Subject "absorption coefficient"

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    Changes Of Thermal Conductivity,optical Conductivity, And Electric Conductivity Of Porous Silicon With Porosity
    (Oum-El-Bouaghi University, 2013) Alfeel, Faten; Awad, Fowzi; Qamar, Fadi
    Porous silicon (PS) was prepared by electrochemical etching method. Mirage effect in transverse photothermal deflection PTD ( skimming configuration) was used to determine thermal conductivity the experimental results of PS thermal conductivity was compared with theoretical results they were almost the same. Optical extinction coefficient and absorption coefficient were calculated from transmittance T and reflectance R curve which measured with UV-Vis-NIR Spectrophotometer, and they were used to calculate the optical conductivity and electric conductivity from the Shankar and Joseph equations, and optical conductivity and electric conductivity were studied with porosity in porous silicon.