Evolution of chemical structure during silver photodiffusion into chalcogenide glass thin films

Kovalskiy, A.; Jain, Himanshu; Mitkova, M.

doi:10.1016/j.jnoncrysol.2008.12.021

Cited by 25 publications

(21 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When the first silver deposits are formed, at tip-film contact, the electric field is higher at that point and the silver migration and electrodeposition are accelerated, with the first Ag particles serving as nucleation centers for further growth. There has been no detectable role of irreversible processes, such as germanium oxidation, 32 as any grown dendrite could be fully dissolved by exposure to light.…”

Section: A C-afm -Ag Cf Growth and Dissolutionmentioning

confidence: 99%

Reversible migration of silver on memorized pathways in Ag-Ge40S60 films

et al. 2015

View full text Add to dashboard Cite

Reversible and reproducible formation and dissolution of silver conductive filaments are studied in Ag-photodoped thin-film Ge 40 S 60 subjected to electric fields. A tip-planar geometry is employed, where a conductive-atomic-force microscopy tip is the tip electrode and a silver patch is the planar electrode. We highlight an inherent "memory" effect in the amorphous chalcogenide solid-state electrolyte, in which particular silver-ion migration pathways are preserved "memorized" during writing and erasing cycles. The "memorized" pathways reflect structural changes in the photodoped chalcogenide film. Structural changes due to silver photodoping, and electrically-induced structural changes arising from silver migration, are elucidated using Raman spectroscopy. Conductive filament formation, dissolution, and electron (reduction) efficiency in a lateral device geometry are related to operation of the nano-ionic Programmable Metallization Cell memory and to newly emerging chalcogenide-based lateral geometry MEMS technologies. The methods in this work can also be used for qualitative multi-parameter sampling of metal/amorphous-chalcogenide combinations, characterizing the growth/dissolution rates, retention and endurance of fractal conductive filaments, with the aim of optimizing devices. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

show abstract

Section: A C-afm -Ag Cf Growth and Dissolutionmentioning

confidence: 99%

Reversible migration of silver on memorized pathways in Ag-Ge40S60 films

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Recently, we have reported about the structure [3], electrical conductivity [4], and optical absorption [5] in superionic Ag 3 AsS 3 -As 2 S 3 glasses and composites. Thin films in this system, as in many other similar ones, were mainly prepared using deposition onto the substrates via vacuum deposition techniques, i.e., thermal evaporation accompanied by a thermally or photo-induced dissolution of silver in As 2 S 3 matrix [6,7] or pulse laser deposition (PLD) [8]. Rather new method used is spin-coating technique [9,10].…”

Section: Introductionmentioning

confidence: 99%

Temperature studies of optical absorption in the sandwich structure based on (Ag3AsS3)0.6(As2S3)0.4 thin film and gold nanoparticles

Studenyak¹

2018

Semicond. Phys. Quantum Electron. Optoelectron.

View full text Add to dashboard Cite

Abstract. (Ag 3 AsS 3 ) 0.6 (As 2 S 3 ) 0.4 thin films deposited using the thermal evaporation technique onto glass substrates previously covered with layers of gold nanoparticles were studied. Optical transmission spectra of the sandwich structure were studied within the temperature range 77-300 K. The absorption spectra in the region of its exponential behaviour were analyzed, the dispersion dependences of refractive index as well as the temperature dependences of the energy pseudogap and Urbach energy were investigated. The disordering processes in the sandwich structure were discussed. The comparative analyses of optical parameters in single (Ag 3 AsS 3 ) 0.6 (As 2 S 3 ) 0.4 layer and in the sandwich structure were performed.

show abstract

“…thermal evaporation accompanied by a thermal or photo-induced dissolution of silver in As 2 S 3 matrix [7,8]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Compositional studies of optical parameters in (Ag3AsS3)x(As2S3)1–x (x = 0.3; 0.6; 0.9) thin films

Studenyak¹

2016

Semicond. Phys. Quantum Electron. Optoelectron.

View full text Add to dashboard Cite

Abstract. (Ag 3 AsS 3 ) x (As 2 S 3 ) 1-x (x = 0.3; 0.6; 0.9) thin films were deposited onto a silica substrate by rapid thermal evaporation. The amount of Ag-rich crystalline phase precipitates on the surfaces of the films increases with Ag 3 AsS 3 content. It has been shown that the absorption edge spectra are described by the Urbach rule. The temperature behaviour of absorption spectra was studied, the temperature dependences of energy position of absorption edge and Urbach energy were also investigated. The influence of compositional disordering due to Ag 3 AsS 3 introduction into As 2 S 3 on the optical parameters of (Ag 3 AsS 3 ) x (As 2 S 3 ) 1-x thin films were analyzsed. The spectral, temperature and compositional behaviour of refractive index for (Ag 3 AsS 3 ) x (As 2 S 3 ) 1-x thin films were studied.

show abstract

Evolution of chemical structure during silver photodiffusion into chalcogenide glass thin films

Cited by 25 publications

References 20 publications

Reversible migration of silver on memorized pathways in Ag-Ge40S60 films

Reversible migration of silver on memorized pathways in Ag-Ge40S60 films

Temperature studies of optical absorption in the sandwich structure based on (Ag3AsS3)0.6(As2S3)0.4 thin film and gold nanoparticles

Compositional studies of optical parameters in (Ag3AsS3)x(As2S3)1–x (x = 0.3; 0.6; 0.9) thin films

Contact Info

Product

Resources

About