OPTICAL-PROPERTIES OF AMORPHOUS-CHALCOGENIDE THIN-FILMS - THE EFFECT OF TE ISOVALENCE SUBSTITUTION IN THE GE-S-SE SYSTEM

Authors
SEDEEK K MAHMOUD EA TERRA FS SAID A ELDIN SM
Citation
K. Sedeek et al., OPTICAL-PROPERTIES OF AMORPHOUS-CHALCOGENIDE THIN-FILMS - THE EFFECT OF TE ISOVALENCE SUBSTITUTION IN THE GE-S-SE SYSTEM, Journal of physics. D, Applied physics, 27(1), 1994, pp. 156-159
Citations number
22
Categorie Soggetti
Physics, Applied
Journal title
Journal of physics. D, Applied physics → ACNP
ISSN journal
00223727
Volume
27
Issue
1
Year of publication
1994
Pages
156 - 159
Database
ISI
SICI code
0022-3727(1994)27:1<156:OOAT-T>2.0.ZU;2-Y
Abstract
Optical properties have been studied in amorphous thin films of variou s Ge-based chalcogenide glasses with a view to investigating the effec t of Te isovalence substitution in the Ge-S-Se system. Te either compl etely replaces S to give Ge2.5Te2.5Se95 and Ge5Te5Se90 or partially re places Se to give Ge2.5S2.5Te2.5Se92.5 and Ge5S5Te5Se85. The changes r ecorded for the absorption band edge and for the optical gap width are discussed in terms of the different physical properties of Te with re spect to S or Se.