Optical properties change in Te diffused As{sub 50}Se{sub 50} chalcogenide thin film
- Department of Physics, Utkal University, Bhubaneswar, 751004, Odisha (India)
In the present report, we present the effect of Te diffusion into As{sub 50}Se{sub 50} thin film which changes the optical properties. The Te/As{sub 50}Se{sub 50} film was irradiated by a laser beam of 532 nm to study the diffusion mechanism due to photo induced effect. The As{sub 50}Se{sub 50}, Te/As{sub 50}Se{sub 50} films show a completely amorphous nature from X-ray diffraction study. A non direct transition was found for these films on the basis of optical transmission data carried out by Fourier Transform infrared Spectroscopy. The optical bandgap is found to be decreased with Te deposition and photo darkening phenomena is observed for the diffused film. The change in the optical constants are well supported by the corresponding change in different types of bonds which are being studied by X-ray photoelectron spectroscopy.
- OSTI ID:
- 22608660
- Journal Information:
- AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARSENIC COMPOUNDS
BEAMS
CHALCOGENIDES
DEPOSITION
DIFFUSION
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
IRRADIATION
LASER RADIATION
OPTICAL PROPERTIES
SELENIUM COMPOUNDS
TELLURIUM
TELLURIUM ADDITIONS
THIN FILMS
TRANSMISSION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY