OPTICAL AND ELECTRICAL PROPERTIES OF CdxZn8-xTe92CHALCOGENIDE THIN FILMS DEPOSITED BY THERMAL EVAPORATION AT LOW TEMPERATURE
نویسندگان
چکیده
CdxZn8-xTe92chalcogenideglass is prepared by melt quenching technique. The thin films of as-prepared glass are deposited by thermal evaporation technique under the vacuum better than 10torr. The optical parameters such as refractive index (n), extinction coefficient (k), the absorption coefficient (α), and optical band gap (Eg) are calculated from transmittance spectra in the 200-1800nm region. The evaluation of complex dielectric constant (ε) and influence of photon energy & composition on these parameters are also studied. The dc electrical conductivity is measured as a function of temperature in the range of 293-353K. It is observed that the electrical conductivity is increased with temperature & Cd concentration in the alloy composition.
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