As2S3 and AgI thin layers as ion sensitive membranes

Tomova, R.; Assa, J.; Stoycheva-Topalova, R.; Buroff, A.

doi:10.1016/s0022-3093(99)00574-8

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…For the developed sensor type, a sensitivity of about 59 mV/pAg (10 À5 to 10 À1 g/l) and a detection limit of approx. 10 À6 mol/L could be observed [33]. À5 mol/L to 10 À1 mol/L, respectively, and a detection limit of 1 Â 10 À6 mol/L (copper) and 1 Â 10 À5 mol/L (lead) were experimentally demonstrated [34 -36].…”

Section: Thin-film Fabrication and Doping Methods Of Chalcogenide Glamentioning

confidence: 99%

About 20 Years of Silicon‐Based Thin‐Film Sensors with Chalcogenide Glass Materials for Heavy Metal Analysis: Technological Aspects of Fabrication and Miniaturization

Schöning

Kloock

2007

Electroanalysis

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Chalcogenide glass materials as membranes for potentiometric sensors for chemical analysis in solutions, e.g., ionselective electrodes, have been studied for more than three decades. Already in the 1970s, first papers dealt with the ion-sensing properties of chalcogenide glasses, followed by systematic investigations of their solid-state chemistry, the sensing mechanism and their analytical characteristics. Combining the analytical performance of chalcogenide glass membranes with techniques originally invented for semiconductor processing, a new generation of silicon-based thinfilm sensors with chalcogenide glass materials for heavy metal detection has been created. In the beginning, co-sputtering of Cu and As 2 Se 3 resulted in a Cu 2þ -selective field-effect sensor, while in recent years, a variety of chalcogenide glass materials have been stoichiometrically deposited onto ISFETs (ion-sensitive field-effect transistor), EIS (electrolyte-insulator-semiconductor), LAPS (light-addressable potentiometric sensor) and mISE structures, respectively, serving as miniaturized chemical sensors. The present review paper is devoted to research and development in the field of silicon-based thin-film sensors with chalcogenide glass materials and emphasizes technological aspects of fabrication and miniaturization within the last 20 years.

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Section: Thin-film Fabrication and Doping Methods Of Chalcogenide Glamentioning

confidence: 99%

About 20 Years of Silicon‐Based Thin‐Film Sensors with Chalcogenide Glass Materials for Heavy Metal Analysis: Technological Aspects of Fabrication and Miniaturization

Schöning

Kloock

2007

Electroanalysis

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“…For example, ChH glasses based on the systems of NaCl‐Ga 2 S 3 ‐GeS 2 , Sb 2 S 3 ‐Ag 2 S 3 ‐AgI, and Ag 0.225 Ge 0.260 S 0.515 ‐AgBr show superionic conductivities and thus are expected to be used in solid‐state batteries. ChH glasses containing transition metal and alkali metal halides can also be used in heavy metal and/or halide ion‐selective electrodes (ISEs) thanks to the following advantages including high selectivity, excellent lifetime, and good chemical durability in strong acids and oxidizing agent media …”

Section: Introductionmentioning

confidence: 99%

Extended glass‐forming region in the AgCl‐Ag₂S‐As₂S₃ ternary system

Yin

et al. 2018

J Am Ceram Soc

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In the present work, glass formation property of the AgCl-Ag 2 S-As 2 S 3 ternary system is investigated. An extended glass-forming region rich in the AgCl content (up to 80 mol.%) is observed. It is also found that there exists a small devitrification domain dividing the whole glass-forming region into two parts. XRD analyses confirm that the precipitated crystals in the crystallized samples are pure AgCl, or Xanthoconite and Proustite Ag 3 AsS 3 , depending on the Ag 2 S/As 2 S 3 ratio and the AgCl content. Structural evolutions of the selected samples 15AgCl-yAg 2 S-zAs 2 S 3 are examined by high-resolution XPS, and Raman spectroscopy. The crystallization mechanisms are studied comprehensively by SEM, DSC, and XRD measurements, and tentatively assigned to the presence of phase separation. The results reported in this article are expected to serve as a guide for the selection of suitable electrode materials for electrochemical applications. K E Y W O R D Sglass-forming region, high-resolution XPS, phase separation

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“…Compared with their crystalline counterparts, ChG glass membranes have advantages of high selectivity, excellent lifetime and good chemical durability in strong acids and oxidizing agent media 19,20 . However, the low detection limit of the conventional Ag + -ISEs based on ChG glasses was only in the micromolar range 21,22 , and this has greatly restricted the application of Ag + -ISEs for determination of Ag + ions at trace levels. It is known that halogen atoms in ChG glasses often act as a glass network terminal, and interrupt the glass network, resulting in the more open structure.…”

Section: Introductionmentioning

confidence: 99%

A chalcohalide glass/alloy based Ag+ ion - selective electrode with nanomolar detection limit

Yin

Wang

et al. 2017

Sci Rep

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In this paper, a silver ion-selective electrode material with lower detection limit is presented. The electrode is based on 22.5As2S3-22.5Ag2S-55AgCl chalcohalide glass membranes. The low detection limit decreases from the micromolar range of the original Ag2S-As2S3 electrode to the nanomolar level (1.89 nM) by introducing AgCl. The addition of AgCl increases the conductivity of the glasses and improves the analytical properties of electrodes because of the joint effects of Ag+ and Cl- on network structure of the glass. The super-Nernstian response behavior was observed for the partially crystallized electrode. The electrode containing AgCl also possesses a high selectivity (except for Hg2+), fast response and good stability.

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As2S3 and AgI thin layers as ion sensitive membranes

Cited by 9 publications

References 5 publications

About 20 Years of Silicon‐Based Thin‐Film Sensors with Chalcogenide Glass Materials for Heavy Metal Analysis: Technological Aspects of Fabrication and Miniaturization

About 20 Years of Silicon‐Based Thin‐Film Sensors with Chalcogenide Glass Materials for Heavy Metal Analysis: Technological Aspects of Fabrication and Miniaturization

Extended glass‐forming region in the AgCl‐Ag₂S‐As₂S₃ ternary system

A chalcohalide glass/alloy based Ag+ ion - selective electrode with nanomolar detection limit

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As2S3 and AgI thin layers as ion sensitive membranes

Cited by 9 publications

References 5 publications

About 20 Years of Silicon‐Based Thin‐Film Sensors with Chalcogenide Glass Materials for Heavy Metal Analysis: Technological Aspects of Fabrication and Miniaturization

About 20 Years of Silicon‐Based Thin‐Film Sensors with Chalcogenide Glass Materials for Heavy Metal Analysis: Technological Aspects of Fabrication and Miniaturization

Extended glass‐forming region in the AgCl‐Ag2S‐As2S3 ternary system

A chalcohalide glass/alloy based Ag+ ion - selective electrode with nanomolar detection limit

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Extended glass‐forming region in the AgCl‐Ag₂S‐As₂S₃ ternary system