Observation of photobleaching and intensity dependent kinetics in Ge 22As 22Se 56 thin films under sub-bandgap light illumination

Pritam Khan, A. R. Barik, Vinod Madhavan, K. S. Sangunni, K. V. Adarsh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We experimentally demonstrate photobleaching (PB) in Ge22As22Se56 thin films, when illuminated with a diode pumped solid state laser (DPSSL) of wavelength 671 nm, which is far below the optical bandgap of the sample. Interestingly, we found that PB is a slow process and occurs even at moderate pump beam intensity of 0.2 W/cm 2, however the kinetics remain rather different.

Original languageEnglish
Title of host publicationIOP Conference Series: Materials Science and Engineering
PublisherInstitute of Physics Publishing
Volume73
Edition1
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventInternational Conference on Materials Science and Technology, ICMST 2012 - Kerala, India
Duration: 10 Jun 201214 Jun 2012

Other

OtherInternational Conference on Materials Science and Technology, ICMST 2012
CountryIndia
CityKerala
Period10/6/1214/6/12

Fingerprint

Photobleaching
Energy gap
Lighting
Thin films
Kinetics
Solid state lasers
Optical band gaps
Diodes
Pumps
Wavelength

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

Cite this

Khan, P., Barik, A. R., Madhavan, V., Sangunni, K. S., & Adarsh, K. V. (2015). Observation of photobleaching and intensity dependent kinetics in Ge 22As 22Se 56 thin films under sub-bandgap light illumination In IOP Conference Series: Materials Science and Engineering (1 ed., Vol. 73). [012073] Institute of Physics Publishing. https://doi.org/10.1088/1757-899X/73/1/012073

Observation of photobleaching and intensity dependent kinetics in Ge 22As 22Se 56 thin films under sub-bandgap light illumination . / Khan, Pritam; Barik, A. R.; Madhavan, Vinod; Sangunni, K. S.; Adarsh, K. V.

IOP Conference Series: Materials Science and Engineering. Vol. 73 1. ed. Institute of Physics Publishing, 2015. 012073.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Khan, P, Barik, AR, Madhavan, V, Sangunni, KS & Adarsh, KV 2015, Observation of photobleaching and intensity dependent kinetics in Ge 22As 22Se 56 thin films under sub-bandgap light illumination in IOP Conference Series: Materials Science and Engineering. 1 edn, vol. 73, 012073, Institute of Physics Publishing, International Conference on Materials Science and Technology, ICMST 2012, Kerala, India, 10/6/12. https://doi.org/10.1088/1757-899X/73/1/012073
Khan P, Barik AR, Madhavan V, Sangunni KS, Adarsh KV. Observation of photobleaching and intensity dependent kinetics in Ge 22As 22Se 56 thin films under sub-bandgap light illumination In IOP Conference Series: Materials Science and Engineering. 1 ed. Vol. 73. Institute of Physics Publishing. 2015. 012073 https://doi.org/10.1088/1757-899X/73/1/012073
Khan, Pritam ; Barik, A. R. ; Madhavan, Vinod ; Sangunni, K. S. ; Adarsh, K. V. / Observation of photobleaching and intensity dependent kinetics in Ge 22As 22Se 56 thin films under sub-bandgap light illumination IOP Conference Series: Materials Science and Engineering. Vol. 73 1. ed. Institute of Physics Publishing, 2015.
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