Optical Properties and Determination of Thermal Transformation Parameters for Se0.65Te0.35 High Reflectance Thin Films

Ayman Ahmed EL-AMIN; Aly Mohammed BADR; Foaud ABDEL-WAHAAB

Makale detayları

Optical Properties and Determination of Thermal Transformation Parameters for Se0.65Te0.35 High Reflectance Thin Films

Yazarlar:

Ayman Ahmed EL-AMIN | Aly Mohammed BADR | Foaud ABDEL-WAHAAB

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2007 Vol.31 Issue 6, pp.331-340

Belge Tipi:

Makale

Yayın Tarihi:

5/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000761073

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Anahtar kelimeler:

Optical Properties and Parameters; High Reflectance Chalcogenide Semiconductors; Thermal Transformation Parameters

Özet:

 

Chalcogenide glasses Se-Te have been prepared from the high  purity constituent elements.  Thin films of these materials have been  deposited by vacuum evaporation.  The thickness effects on the optical  properties have been performed for the as-deposited films.  The impact  of varying thickness on the value of the optical gap is also reported  and discussed.  The resultant films were in amorphous nature.  The  reflectance and transmittance spectra were measured for the mentioned  films and analyzed in the incident photon energy range from 1.16 to  2.47 eV. The refractive indices were determined as a function of  wavelength via the transmittance analysis in the incident photon  energy range from 1.16 to 1.38 eV. Also, the dispersion energy,  oscillator energy, static refractive index and static dielectric  constant were calculated for the thicknesses under investigation.  The  results of differential scanning calorimetry (DSC) at different  heating rates are reported and analyzed.  The activation energies for  the glass transition and crystallization were calculated.

 

Chalcogenide glasses Se-Te have been prepared from the high  purity constituent elements.  Thin films of these materials have been  deposited by vacuum evaporation.  The thickness effects on the optical  properties have been performed for the as-deposited films.  The impact  of varying thickness on the value of the optical gap is also reported  and discussed.  The resultant films were in amorphous nature.  The  reflectance and transmittance spectra were measured for the mentioned  films and analyzed in the incident photon energy range from 1.16 to  2.47 eV. The refractive indices were determined as a function of  wavelength via the transmittance analysis in the incident photon  energy range from 1.16 to 1.38 eV. Also, the dispersion energy,  oscillator energy, static refractive index and static dielectric  constant were calculated for the thicknesses under investigation.  The  results of differential scanning calorimetry (DSC) at different  heating rates are reported and analyzed.  The activation energies for  the glass transition and crystallization were calculated.

Makale detayları

Optical Properties and Determination of Thermal Transformation Parameters for Se0.65Te0.35 High Reflectance Thin Films

Yazarlar: Ayman Ahmed EL-AMIN | Aly Mohammed BADR | Foaud ABDEL-WAHAAB

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2007 Vol.31 Issue 6, pp.331-340

Belge Tipi: Makale

Yayın Tarihi: 5/2007

Belge Dili: Türkçe

Document ID (Org No.): 2000761073

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Optical Properties and Parameters; High Reflectance Chalcogenide Semiconductors; Thermal Transformation Parameters

Sayı

Yazarlar:

Ayman Ahmed EL-AMIN | Aly Mohammed BADR | Foaud ABDEL-WAHAAB

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2007 Vol.31 Issue 6, pp.331-340

Belge Tipi:

Makale

Yayın Tarihi:

5/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000761073

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101