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Effect Of Sodium Based Transparent Binders On The Optical Properties Of Gase Thin Films, Ahmad Omar
Effect Of Sodium Based Transparent Binders On The Optical Properties Of Gase Thin Films, Ahmad Omar
Journal of the Arab American University مجلة الجامعة العربية الامريكية للبحوث
The effect of sodium based transparent binders on the optical properties of vacuum evaporated GaSe thin films are explored by means of optical reflectivity and transmittance of the binder, GaSe and GaSe/binder interfaces in the incident light wavelength range of 300-1100 nm. The analysis of the absorption coefficient spectra for the three samples revealed a pronounced red shift in the direct allowed electron transition's energy band gap of the GaSe. In addition, the band tail states of GaSe, which was observed at ~ 0.25 eV, disappeared upon binder coating. The binder coated GaSe films screen the energy band gap of …