Ionic and electronic transport in AgI–As2Te3 glasses

Alekseev, I. E.; Kassem, Mohammad; Fourmentin, Marc; Coq, David Le; Iizawa, R.; Usuki, Takeshi; Бычков, Е.

doi:10.1016/j.ssi.2013.09.059

Cited by 10 publications

(18 citation statements)

References 11 publications

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“…The Haven ratio for the ion-conducting glass (AgI)0.6(As2Te3)0.4, HR = 0.44±0.08, is very similar to those for AgI-rich superionic (AgI)z(As2Se3)1-z vitreous alloys, HR = 0.40±0.04 at z ≥ 0.4. 17,19 Assuming that the (AgI)0.5(As2Te3)0.5 glass also has HR = 0.44, the calculated tAg + values vary between 0.8 and 0.2 for this particular composition, Figure 6.…”

Section: Ionic Versus Electronic Transportmentioning

confidence: 96%

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As₂Te₃ Glasses: An ^110mAg Tracer Diffusion Study

et al. 2018

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Conductivity isotherms of (CdTe) (AgI)(AsTe) glasses (0.0 ≤ x ≤ 0.15) reveal a nonmonotonic behavior with increasing CdTe content reminiscent of mixed cation effect in oxide and chalcogenide glasses. Nevertheless, the apparent similarity appears to be partly incorrect. Using Ag tracer diffusion measurements, we show that semiconducting CdTe additions produce a dual effect: (i) decreasing the Ag ion transport by a factor of ≈200 with a simultaneous increase of the diffusion activation energy and (ii) increasing the electronic conductivity by 1.5 orders of magnitude. Consequently, the conductivity minimum at x = 0.05 reflects an ionic-to-electronic transport crossover; the silver-ion transport number decreases by 3 orders of magnitude with increasing x.

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Section: Ionic Versus Electronic Transportmentioning

confidence: 96%

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As₂Te₃ Glasses: An ^110mAg Tracer Diffusion Study

et al. 2018

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“…In that context, it appeared interesting to lead a study on the electrical conductivities (electronic versus ionic) on these (GeTe 4 ) 100-x (AgI) x glasses in order to get valuable information on their structure. Note that both Ag and AgI doped sulfide and selenide glasses are ionic conductive [9,15,30,31], whereas for telluride equivalent systems there is a competition between ionic and electronic conductivities [10]. So, in the present contribution, the electrical property of (GeTe 4 ) 100-x Ag x glasses will be investigated together with the (GeTe ) 100-x (AgI) x system by electrochemical impedance spectroscopy and four probe method.…”

Section: Introductionmentioning

confidence: 99%

“…A structural study has also been carried out to try to better understand the unique stability of these materials. On the other hand, chalcogenide glasses, especially tellurium glasses, have attracted considerable attention in recent years due to their electrical properties [3][4][5][6][7][8][9][10][11][12][13][14]. Moreover, the chalcogenide glasses containing metal cations are able to behave as fast ionic conductors [7,15], showing their potential application as solid electrolytes in the solid-state batteries, fuel cell technologies, and other electrochemical devices [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, Tebased glasses, due to their narrow band gap and low thermal stability, are often used as memory devices based on thermally driven amorphous crystalline phase changes [25,26]. Very little is known about the ion transport properties in telluride glasses if we except a few papers [10,[27][28][29][30]. In that context, it appeared interesting to lead a study on the electrical conductivities (electronic versus ionic) on these (GeTe 4 ) 100-x (AgI) x glasses in order to get valuable information on their structure.…”

Section: Introductionmentioning

confidence: 99%

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Electrical and optical investigations in Te–Ge–Ag and Te–Ge–AgI chalcogenide glasses

Cui

Coq

Boussard‐Plédel

et al. 2015

Journal of Alloys and Compounds

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International audience(GeTe4)100-xAgx and (GeTe4)100-x(AgI)x glasses were prepd. by a melting-quenching method. The glass elec. cond. was investigated by both electrochem. impedance spectroscopy at different temps. from 283 K to 333 K and four-probe method at room temp. (293 K). Meanwhile, as a major factor detg. the elec. cond. of a solid, optical band gap was also studied. By comparing the elec. cond. values and glass optical band gap evolution, it was found that (GeTe4)100-xAgx glasses are mainly electronic conductive. On the other hand, the elec. conductivities of (GeTe4)100-x(AgI)x glasses firstly show a monotonic decrease by increasing AgI up to 15 mol.%, and then an increase when the AgI content is higher than 15 mol.%. The activation energy Ea and the pre-exponential factor σ0 show apparent turning point when AgI content is 15 mol.%, signifying a cond. mechanism change. In this paper, correlations between the cond. and hypothetical structures in (GeTe4)100-xAgx and (GeTe4)100-x(AgI)x glasses are done and the importance of the Ag role is underlined

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“…Examples of such systems are so‐called ionic‐electronic melts . The presented method can be useful for studying mixed ionic‐electronic conductivity not only in liquids but also in glasses and crystalline solids too. These materials are interesting first of all as electrode materials for chemical power sources …”

Section: Introductionmentioning

confidence: 99%

A new extension of classical molecular dynamics: An electron transfer algorithm

Расковалов

2017

J Comput Chem

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The molecular dynamics is one of the most widely used methods for the simulation of the properties corresponding to ionic motion. Unfortunately, classical molecular dynamics cannot be applied for electron transfer simulation. Suggested modification of the molecular dynamics allows performing the electron transfer from one particle to another during simulation runtime. All additional data structure and the corresponding algorithms are presented in this article. The method can be applied to the systems with pair Van der Waals and Coulomb interactions. Moreover, it may be extended for many-bodied interatomic interactions. In addition, an algorithm of transference numbers calculation has been designed. This extension is not an independent method but it can be useful for simulating the systems with high concentration of electron donors and acceptors. © 2017 Wiley Periodicals, Inc.

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Ionic and electronic transport in AgI–As2Te3 glasses

Cited by 10 publications

References 11 publications

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As₂Te₃ Glasses: An ^110mAg Tracer Diffusion Study

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As₂Te₃ Glasses: An ^110mAg Tracer Diffusion Study

Electrical and optical investigations in Te–Ge–Ag and Te–Ge–AgI chalcogenide glasses

A new extension of classical molecular dynamics: An electron transfer algorithm

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Ionic and electronic transport in AgI–As2Te3 glasses

Cited by 10 publications

References 11 publications

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As2Te3 Glasses: An 110mAg Tracer Diffusion Study

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As2Te3 Glasses: An 110mAg Tracer Diffusion Study

Electrical and optical investigations in Te–Ge–Ag and Te–Ge–AgI chalcogenide glasses

A new extension of classical molecular dynamics: An electron transfer algorithm

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Product

Resources

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Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As₂Te₃ Glasses: An ^110mAg Tracer Diffusion Study

Ionic-to-Electronic Conductivity Crossover in CdTe–AgI–As₂Te₃ Glasses: An ^110mAg Tracer Diffusion Study