A review of optical properties of metal chalcogenide glasses

Hautala, J.; Taylor, P. C.

doi:10.1016/s0022-3093(05)80515-0

Cited by 22 publications

(19 citation statements)

References 21 publications

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“…The Ag(Cu) concentration of the prepared samples was ranged between 5 and 35 at.%. The metal-chalcogenide films prepared by this method are less likely to crystallize than the films prepared from melt quenching bulk metal-chalcogenide samples [13].…”

Section: Methodsmentioning

confidence: 98%

Thermal dissolution of Ag(Cu) in amorphous Ge(Sx Se1−x)2 system

Ibrahim

Balboul

Fayek

et al. 2011

Journal of Non-Crystalline Solids

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Section: Methodsmentioning

confidence: 98%

Thermal dissolution of Ag(Cu) in amorphous Ge(Sx Se1−x)2 system

Ibrahim

Balboul

Fayek

et al. 2011

Journal of Non-Crystalline Solids

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“…In Cu-As-Se glasses for all compositions, the coordination of Cu is found to be four [5,6]. For Cu to be in four fold coordination, formal transfer of lone pair electrons from Se or As atoms must take place.…”

mentioning

confidence: 90%

“…Thus, a possible way of doping chalcogenide glasses might involve increasing the coordination number of the chalcogen atoms to four [5].…”

mentioning

confidence: 99%

Electrical resistivity of Cu doped As–Se glasses at high pressure

Ramesh

Rao

Sangunni

et al. 2003

Physica Status Solidi (b)

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Electrical resistivity measurements have been performed on Cu x As 40 Se 60-x glasses with x between 0 and 28 at% of Cu. The resistivity of these glasses continuously decreases and saturates at higher quasi-hydrostatic pressures. The pressure derivative of the electrical resistivity shows distinct changes as a function of composition; a large change for the initial addition of Cu (≤ 10 at% Cu) and levelling off for higher content of Cu. To understand this, Differential Scanning Calorimetric (DSC) and thermal crystallization studies have been carried out on all these glasses. Thermal crystallization of As-Se glasses with 5 and 10 at% Cu results in crystalline Cu 3 AsSe 4 and As 2 Se 3 phases, whereas glasses with 15 and 20 at% of Cu crystallize into Cu 3 AsSe 4 phase only. Glasses with 25 and 28 at% of Cu yield a new binary Cu 2 As 3 and the ternary Cu 3 AsSe 4 phase. These structural differences arising as a function of composition are reflected in the pressure derivative of the resistivity of the glasses.

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“…When Cu is added to As-Se glasses the local coordination of Se gradually increases from 2 to 4 and the average coordination (Z av ) of the network increases remarkably and approaches to 4, a transition from lone-pair semiconductor to tetrahedral semiconductor [2,11]. The remarkable change in average coordination is shown to affect the intrinsic defects commonly present in the chalcogenide glasses [5]. Overall, the network connectivity, crystallizing ability and electrical conductivity of the chalcogenide glasses are significantly altered by the addition of metallic atoms [1].…”

Section: Introductionmentioning

confidence: 97%

“…The addition of metallic atoms to chalcogenide glasses is known to result in changes in the short range order (SRO) and consequent changes in the physio-chemical properties [1][2][3][4][5]. Interestingly, in selenium based chalcogenide glasses the metallic atoms play a dual role as network modifiers in Se rich side and network formers in Se deficient side, thereby influencing the network connectivity very much [6].…”

Section: Introductionmentioning

confidence: 99%