On the influence of Ag-photodoping on the optical properties of AsS glass films

Márquez, E.; Ramírez-Malo, J.B.; Fernández-Peña, J.; Villares, P.; Jiménez‐Garay, R.; Ewen, Peter; Owen, A.E.

doi:10.1016/0022-3093(93)91221-n

Cited by 20 publications

(5 citation statements)

References 11 publications

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“…Addition of silver in arsenic based chalcogenide thin films affects their bonding configuration, leading to a change in their electrical and optical properties. Also, it is well known that As-S-Ag materials exhibit interesting photoinduced phenomena mainly based on the motion of metal ions along the direction of the incoming irradiation [6,7]. Based on these facts, we can suppose that addition of silver could affect the bonding configuration and thus improve the PIB, since we would induce a photo-rearrangement or rotation of some new structural units.…”

Section: Introductionmentioning

confidence: 93%

As_4S_4 role on the photoinduced birefringence of silver-doped chalcogenide thin films

Messaddeq¹,

Boily²,

Santagneli³

et al. 2016

Opt. Mater. Express

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Ag X (As 40 S 60) 100-X thin films (x = 7, 15, 25, 50) were deposited on glass slides by a co-evaporation technique under a vacuum. Photoinduced birefringence was induced using light provided from a continuous argon-ion laser operating at 488 nm. We investigated the impact of silver concentration and laser power density. The thin films structural changes after irradiation were characterized by Raman spectroscopy, indicating that addition of Ag induces the breaking of sulfur ring units and favors the creation of Ag-SAg bridging bonds. During this process, AgS 3 pyramids and As 4 S 4 molecules are formed, the latter being responsible for an increased photoinduced birefringence.

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Section: Introductionmentioning

confidence: 93%

As_4S_4 role on the photoinduced birefringence of silver-doped chalcogenide thin films

Messaddeq¹,

Boily²,

Santagneli³

et al. 2016

Opt. Mater. Express

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“…The addition of silver into chalcogenide glasses leads to drastic changes in the physical and chemical properties of the materials [26,27]. For instance, in thin films from As x S(Se) 100−x systems (for x = 30, 33, 40 at%) large increases of about 0.4-0.7 in the refractive index were observed following Ag photo-dissolution [28][29][30][31]. This could be ascribable to the easily polarizable electron clouds of the silver atoms.…”

Section: Introductionmentioning

confidence: 99%

Structural and optical characterization of Ag photo-doped thin As₄₀S_{60 −x}Se_xfilms for non-linear applications

Tasseva

Todorov²,

Babeva

et al. 2010

J. Opt.

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This paper deals with the structure and the optical properties of thin As40S60 − xSex films doped with silver. The refractive index n and the optical band gap Egopt were calculated from the transmittance and reflectance spectra. The results showed that the photo-doping leads to increase in the refractive index by about 0.25–0.27. An effect of thickness expansion was observed in the photo-doped layers. The non-linear refractive index, γ, and the two-photon absorption coefficient, β, were evaluated by applying a formula developed by Sheik-Bahae. Each of the films studied exhibits a highly non-linear refractive index at the telecommunication wavelength, 70–850 times higher than that measured for fused silica. From the Raman spectra of thin As40S30Se30 it might be concluded that under dissolution, the silver interacts with both sulfur and selenium. The surface of the thin films was investigated by using a white light interferometric profiler. It was found that the increase in the thickness of the silver layer results in roughening of the surface of the photo-doped films.

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“…[1,2]. The change or the application of any of these factors leads to irreversible changes of optical characteristics of the investigated semiconductor.…”

Section: Introductionmentioning

confidence: 97%

Analysis of some optical parameters of the glasses of the system Bi_x(As₂S₃)_100‐x

Šiljegović

Lukić

Štrbac

2011

Phys. Status Solidi C

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With the aim of characterizing the optical properties of the glasses from the system Bix(As2S3)100‐x, for x=0.5, 2 and 4 at.% Bi, their absorption coefficients and index of refraction were measured. The extrapolation of the linear parts of the absorption coefficient dispersion curve for the different sample thicknesses enabled the determination of the optical band gap Eg. Also, in view of the range of the values of the absorption coefficients for all three glasses, it was possible to determine the Urbach slope Ee, the width of the tails in the localized states of the optical gap. The results of the refractive index measurement were treated using the Wemple di‐Domenico dispersion analysis. Among the others, the effective oscillator energy E0 and the strength parameter of interband optical transitions Ed were determined, the latter being of special importance as it establishes the link with the other physical parameters of the material. In this way, it was possible to estimate the coordination number in the investigated glasses, which enabled the derivation of certain conclusions about the lattice modification caused by introducing Bi into the arsenic‐sulfide matrix (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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On the influence of Ag-photodoping on the optical properties of AsS glass films

Cited by 20 publications

References 11 publications

As_4S_4 role on the photoinduced birefringence of silver-doped chalcogenide thin films

As_4S_4 role on the photoinduced birefringence of silver-doped chalcogenide thin films

Structural and optical characterization of Ag photo-doped thin As₄₀S_{60 −x}Se_xfilms for non-linear applications

Analysis of some optical parameters of the glasses of the system Bi_x(As₂S₃)_100‐x

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On the influence of Ag-photodoping on the optical properties of AsS glass films

Cited by 20 publications

References 11 publications

As_4S_4 role on the photoinduced birefringence of silver-doped chalcogenide thin films

As_4S_4 role on the photoinduced birefringence of silver-doped chalcogenide thin films

Structural and optical characterization of Ag photo-doped thin As40S60 −xSexfilms for non-linear applications

Analysis of some optical parameters of the glasses of the system Bix(As2S3)100‐x

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Product

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Structural and optical characterization of Ag photo-doped thin As₄₀S_{60 −x}Se_xfilms for non-linear applications

Analysis of some optical parameters of the glasses of the system Bi_x(As₂S₃)_100‐x