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Structural and Optical Modification in Bi doped As40S60 Thin Films.

Naik, Ramakanta and Chinnaiyah, SS and Ganesan, R (2015) Structural and Optical Modification in Bi doped As40S60 Thin Films. In: 59th DAE Solid State Physics Symposium, DEC 16-20, 2014, VIT Univ, Vellore, INDIA.

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The influence of substitution of Bi atom instead of S atoms on the structural and optical properties of thin films of As40S60 are reported. The density is found to be increased with the addition Bi heavy metal into As2S3. The amorphous to polycrystalline structure of the bulk sample is observed for Bi more than 7%. The glass transition temperature is found to be decreased with addition of Bi. The absorption edge shifts to shorter wavelength, thereby decreasing optical band gap of BixAs(40)S(60-x) (x= 0,2 and 4% here) film. The optical parameter change is discussed from the stand point of chemical bonds formed in the films and related to the defect states produced due to incorporation of Bi atoms in place of chalcogenide S atoms.

Item Type: Conference Proceedings
Series.: AIP Conference Proceedings
Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Keywords: Thin film; Optical properties; FTIR; XPS
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 14 Jan 2016 04:28
Last Modified: 14 Jan 2016 04:28
URI: http://eprints.iisc.ac.in/id/eprint/53117

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