Photo induced changes in the optical properties of thermally evaporated As 40 Se 50 Sb 10 films

Autor:	E. M. Vinod, K. S. Sangunni, R. Ganesan, Ramakanta Naik, Arpitha Jain
Rok vydání:	2011
Předmět:	symbols.namesake Materials science Homopolar motor X-ray photoelectron spectroscopy Band gap Analytical chemistry symbols Thin film Fourier transform infrared spectroscopy Condensed Matter Physics Raman spectroscopy Spectral line Amorphous solid
Zdroj:	physica status solidi c. 8:2785-2788
ISSN:	1610-1642 1862-6351
DOI:	10.1002/pssc.201084130
Popis:	The thermally evaporated amorphous As40Se50Sb10 thin film of 800 nm thickness was subjected to light exposure for photo induced studies. The changes were accompanied by structural effects, which in turn, lead to changes in the optical properties. The as-prepared and illuminated thin films were studied by Fourier Transform Infrared Spectroscopy, 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 spectra and Raman shift supports the optical changes happening in the film due to light exposure. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Databáze:	OpenAIRE
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