Experimental characterization of amorphous As–Se–Sb alloys

Moharram, A.H.; Othman, A.A.; Amer, H.H.; Dahshan, A.

doi:10.1016/j.jnoncrysol.2006.02.055

Cited by 20 publications

(8 citation statements)

References 26 publications

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“…This increase in the coordination number is accompanied by an increase in the T g . This result is well accepted by many authors [16,17,6,18]. The increase in T g with increasing Sb content is probably due to the increase in mean molecular weight of the glasses as the Sb concentration is increased.…”

Section: Discussionsupporting

confidence: 83%

Thermal stability and crystallization kinetics of new As–Ge–Se–Sb glasses

Dahshan

2008

Journal of Non-Crystalline Solids

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Section: Discussionsupporting

confidence: 83%

Thermal stability and crystallization kinetics of new As–Ge–Se–Sb glasses

Dahshan

2008

Journal of Non-Crystalline Solids

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“…As [5] Ge [17] Se [5] Sb [5] Energy gap (eV) To extend this idea to ternary and higher order semiconductor compounds, the average heat of atomization is defined for a compound A B C D l as [16]:…”

Section: Resultsmentioning

confidence: 99%

“…As chalcogenide glassy semiconductors, the physical properties of As-Se-Sb and Ge-Se-Sb are strongly dependent on composition [5][6][7][8]; thus, composition is especially importance in studying their physical properties.…”

Section: Introductionmentioning

confidence: 99%

Characterization of new quaternary chalcogenide As–Ge–Se–Sb thin films

Dahshan

Aly

2008

Philosophical Magazine

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This paper reports the effect of replacement of selenium by antimony on the optical gap and some other physical parameters of new quaternary chalcogenide As 14 Ge 14 Se 72Àx Sb x (where x ¼ 3, 6, 9, 12 and 15 at%) thin films. Thin films with thickness 200-220 nm of As 14 Ge 14 Se 72Àx Sb x were prepared by thermal evaporation of the bulk samples. Increasing antimony content was found to affect the average heat of atomization, the average coordination number, number of constraints and cohesive energy of the As 14 Ge 14 Se 72Àx Sb x alloys. Optical absorption measurements showed that the fundamental absorption edge is a function of composition. Optical absorption is due to allowed, non-direct transition and the energy gap decreases with the increasing antimony content. The chemical bond approach has been applied successfully to interpret the decrease in the optical gap with increasing antimony content.

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“…Studies of these properties and others are believed to be useful for improving the stability characteristics of the devices based on Se-Te-Sb films. The addition of Sb to the chalcogenide glasses expands the glass forming area and also creates compositional and configurational disorder in the system [14][15][16].…”

Section: Introductionmentioning

confidence: 99%