Light induced optical properties change in Sb 20S 40Se 40 thin films

Ramakanta Naik, Sanjit K. Parida, E. M. Vinod, R. Ganesan, K. S. Sangunni

Research output: Contribution to journalArticle


Thin films of Sb 20S 40Se 40 of thickness 800 nm were prepared by thermal evaporation method. The as-prepared and illuminated thin films were studied by X-ray diffraction, Fourier Transform Infrared Spectroscopy and X-ray Photoelectron Spectroscopy and Raman spectroscopy. The optical band gap was reduced due to photo induced effects along with the increase in disorder. These optical properties changes are due to the change of homopolar bond densities. The core level peak shifting in XPS and Raman spectra supports the optical changes happening in the film due to light exposure.

Original languageEnglish
Pages (from-to)358-362
Number of pages5
JournalAIP Conference Proceedings
Issue number1
Publication statusPublished - 1 Dec 2011



  • Optical properties
  • Raman shift
  • Thin films
  • XPS

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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