Silver incorporation in Ge–Se glasses used in programmable metallization cell devices

Mitkova, M.; Kozicki, Michael

doi:10.1016/s0022-3093(01)01068-7

Cited by 146 publications

(85 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This effect has diverse applications such as photo-resist, 4 the fabrication of relief images in optical elements, 5 and non-volatile memory devices. 6 From both fundamental research and application points of view, it is important to know how silver photodiffusion takes place. According to several studies using Rutherford backscattering (RBS), the photo-diffusion is unique to show a step-like profile of silver concentration in contrast to a usual diffusion in which the concentration gradually decreases as a function of distance from the silver layer.…”

Section: Introductionmentioning

confidence: 99%

Silver photo-diffusion and photo-induced macroscopic surface deformation of Ge33S67/Ag/Si substrate

Sakaguchi

Asaoka

Uozumi

et al. 2016

Journal of Applied Physics

View full text Add to dashboard Cite

Ge-chalcogenide films show various photo-induced changes, and silver photo-diffusion is one of them which attracts lots of interest. In this paper, we report how silver and Ge-chalcogenide layers in Ge 33 S 67 /Ag/Si substrate stacks change under light exposure in the depth by measuring timeresolved neutron reflectivity. It was found from the measurement that Ag ions diffuse all over the matrix Ge 33 S 67 layer once Ag dissolves into the layer. We also found that the surface was macroscopically deformed by the extended light exposure. Its structural origin was investigated by a scanning electron microscopy. Published by AIP Publishing. [http://dx

show abstract

Section: Introductionmentioning

confidence: 99%

Silver photo-diffusion and photo-induced macroscopic surface deformation of Ge33S67/Ag/Si substrate

Sakaguchi

Asaoka

Uozumi

et al. 2016

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…When a metal ion is introduced into the chalcogenide base, the ions nucleate on the chalcogen-rich regions within the base glass, resulting in a ternary that takes the form of a dispersed nanoscale metal ion-rich phase in a continuous glassy matrix [5]. This allows the electrolyte to have a relatively high resistivity (necessary for a high off resistance state), while containing large quantities of highly mobile metal ions (see Fig.…”

Section: Nanoionic Device Physics (Overview)mentioning

confidence: 99%

A novel nanoionics-based switch for microwave applications

Nessel

Lee

Mueller

et al. 2008

2008 IEEE MTT-S International Microwave Symposium Digest

View full text Add to dashboard Cite

-This paper reports the development and characterization of a novel switching device for use in microwave systems. The device utilizes a switching mechanism based on nanoionics, in which mobile ions within a solid electrolyte undergo an electrochemical process to form and remove a conductive metallic "bridge" to define the change of state.The nanoionics-based switch has demonstrated an insertion loss of ~0.5dB, isolation of >30dB, low voltage operation (1V), low power (~μW) and low energy (~nJ) consumption, and excellent linearity up to 6 GHz. The switch requires fewer bias operations (due to non-volatile nature) and has a simple planar geometry allowing for novel device structures and easy integration into microwave power distribution circuits.

show abstract

“…The unique phenomenon of photoinduced Ag diffusion into ChG thin films is successfully exploited in photolithography and memory devices [1,2]. The mechanism of this effect has been studied by different experimental and theoretical methods [4][5][6][7][8], but atomistic and chemical origin of the observed structural transformations is still under discussion.…”

Section: Introductionmentioning

confidence: 99%

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

Kovalskiy¹,

Jain²,

Mitkova³

2009

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

This is an author-produced, peer-reviewed version of this article. AbstractThe change of chemical structure resulting after X-ray and photo-induced silver diffusion into chalcogenide glass (ChG) thin films is monitored by high resolution X-ray photoelectron spectroscopy (XPS). As 40 S 60 and Ge 30 Se 70 thin films, which are based on pyramids and tetrahedral structural units, are investigated as model materials. Survey, core level (As 3d, S 2p, Ge 3d, Ge 2p, Se 3d, Ag 3d 5/2 , O 1s, C 1s) and valence band spectra have been recorded and analyzed. Reference point for the binding energy is established by the subsequent deposition of thin gold film on top of the measured samples. The chemical structure gradually changes during diffusion of silver in all the samples. The mechanism of change depends on the chemical composition, thickness of the diffused silver layer and conditions of irradiation. It is revealed that surface oxygen can play important role in the Ag photodiffusion process, leading to phase separation on the surface of the films. Photodiffusion of Ag into As 40 S 60 film leads to the formation of a uniform ternary phase and arsenic oxides on the surface. The formation of ethane-like Ge 2 (S 1/2 ) 6 units together with germanium oxidation are the main outcomes of X-ray induced Ag diffusion into Ge 30 Se 70 film.

show abstract

Silver incorporation in Ge–Se glasses used in programmable metallization cell devices

Cited by 146 publications

References 13 publications

Silver photo-diffusion and photo-induced macroscopic surface deformation of Ge33S67/Ag/Si substrate

Silver photo-diffusion and photo-induced macroscopic surface deformation of Ge33S67/Ag/Si substrate

A novel nanoionics-based switch for microwave applications

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

Contact Info

Product

Resources

About