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- Title
Thermal and optical characterization of Ge-Sn-Se glass system.
- Authors
Sharma, Surbhi; Kumar, Rajesh; Sareen, Amit; Sharma, Navjeet
- Abstract
Thermal and optical characterization of GeSnSe ( x = 14, 18, 22, 26) glasses has been carried out using differential scanning calorimetry and UV-VIS-NIR spectroscopy, respectively. Bulk samples were prepared using conventional melt quenching technique. Amorphous nature of the prepared samples was confirmed using X-ray diffraction. The transmission spectra of as deposited films, for normal incidence, were recorded in the range 400-2,500 nm. Optical constants such as absorption coefficient, refractive index and extinction coefficients have been determined using the envelope method. Dispersion of refractive index has been analyzed using single-effective oscillator model. Optical band gap has been measured using Tauc plots. Effect of composition variation on thermal and optical properties has been discussed in view of chemical bond approach.
- Subjects
GERMANIUM alloys; DIFFERENTIAL scanning calorimetry; ULTRAVIOLET spectroscopy; METALLIC glasses; THERMAL properties of metals; OPTICAL properties of metals
- Publication
Applied Physics A: Materials Science & Processing, 2015, Vol 118, Issue 4, p1551
- ISSN
0947-8396
- Publication type
Academic Journal
- DOI
10.1007/s00339-014-8940-z