Structural and optical properties of Ag<sub>2</sub>S thin films prepared by spray pyrolysis

Dlala, H.; Amlouk, M.; Belgacem, S.; Girard, P.; Barjon, D.

doi:10.1051/epjap:1998162

Cited by 45 publications

(28 citation statements)

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“…[10] Silver sulfide (Ag 2 S) is a direct, narrow-bandgap semiconductor with good chemical stability and excellent optical limiting properties, as well as an unusual solid ionic conductor that operates at room temperature and conducts both electrons and ions. [11][12][13] It has significant applications in optical and electronic devices such as photoconductors, photovoltaic cells, and superionic conductors. [14][15][16] Single-crystalline Ag 2 S nanowires can be expected to have superior properties owing to their anisotropic geometry, large surface-to-volume ratio, and carrier and photon confinement in two dimensions.…”

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confidence: 99%

Ultralong Single‐Crystalline Ag₂S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Wang¹,

Hao²,

Zheng³

et al. 2008

Advanced Materials

125

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confidence: 99%

Ultralong Single‐Crystalline Ag₂S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Wang¹,

Hao²,

Zheng³

et al. 2008

Advanced Materials

125

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“…For the structural study, the substrate temperature T s was chosen in the range 200±250 C. This temperature domain was optimized previously in our laboratory [1]. In the same way, the pyrex glass and pyrex substrates were coated by a thin film of tin oxide SnO 2 : F with an area of 4 cm 2 .…”

Section: Thin Film Preparationmentioning

confidence: 99%

“…It has attracted considerable attention of a wide variety of potential applications like IR detectors and photosensitive films in optoelectronical devices [2±5], principal element in thermopower cells [6] and solar-selective coatings [7]. Its band gap value E g % 1.14 eV and relatively high absorption coefficient (a % 10 4 cm ± ±1 ) [1] show that this material is required to work as a photoconductor in photoconducting cells. Thin films of Ag 2 S have been prepared by different methods [8±10].…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical Characterization of Sprayed ?-Ag2S Thin Films

Dlala

Amlouk

Nasrallah

et al. 2000

phys. stat. sol. (a)

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Silver sulfide Ag 2 S thin films have been prepared on pyrex and on SnO 2 /pyrex substrates by the spray pyrolysis technique (Dlala et al., Europ. Phys. J. A 2, 13 (1998)) using silver acetate and thiourea as precursors. The depositions were carried out at 200 and 250 C. The X-ray diffraction spectra show that a substrate temperature T s = 250 C with a concentration ratio x = [S]/[Ag] = 2 in the solution allows to obtain well crystallized thin films with a preferential orientation along ( 103) direction. Microprobe analysis as well as X-ray photoelectron spectroscopy (XPS) show that a nearly stoichiometric composition is obtained under these conditions. Moreover, we noticed by the same technique the presence of oxygen and carbon components particularly on the surface, due to a contamination effect. Indeed, it can be seen after etching that the intensity peaks decrease strongly, which indicated the weak proportion of these elements in the bulk of the films.Des couches minces de sulfure d'argent Ag 2 S sont pre Â pare Â es, sur substrats de pyrex et de SnO 2 / pyrex par la technique de pulve Â risation chimique re Â active en phase liquide (Dlala et al., Europ. Phys. J. A 2, 13 (1998)) en utilisant comme pre Â curseurs l'ace Â tate d'argent et la thioure Â e. Les de Â po Ã ts ont e Â te Â fabrique Â s aux tempe Â ratures de substrat 200 et 250 C. Les diagrammes de diffraction de rayons X montrent que les couches de Ag 2 S, re Â alise Â es a Á une tempe Â rature de substrat de 250 C et avec un rapport de concentrations en solution x = [S]/[Ag] = 2, sont assez bien cristallise Â es et les cristallites sont oriente Â es pre Â fe Â rentiellement suivant la direction ( 103). L'analyse par microsonde e Â lectronique (EPMA) et par spectroscopie de photoe Â lectrons X (XPS), montre qu'une bonne stoichiome Â trie est obtenue pour ces conditions d'e Â laboration. De plus, d'apre Á s les spectres obtenus par XPS, nous remarquons la pre Â sence d'e Â le Â ments oxyge Á ne et carbone essentiellement en surface, du Ã a Á un effet de contamination. En effet, la me Ã me technique d'analyse montre qu'apre Á s de Â capage des de Â po Ã ts, l'intensite Â des raies correspondantes diminuent conside Â rablement indiquant leur faible proportion en volume.

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“…Aer hundreds of attempts, we came to the conclusion that such temperature ranges are not suitable but for elaborating ternary oxides. Dlala et al [16], succeeded to stabilize Ag 2 S thin �lms; Amlouk et al [17] elaborated SnO 2 :F and CdS airless sprayed layers Khélia et al [18], Kamoun et al [19], and Amlouk et al [20] fabricated and characterized -SnS 2 and -In 2-Al S 3 compounds at low temperatures. Binary sulphide compounds such as Ag 2 S, Cu 2 S, SnS 2 , and In 2 S 3 have been obtained in our laboratory in 200-320 ∘ C domain of temperature.…”

Section: Introductionmentioning

confidence: 99%

The Lattice Compatibility Theory: Arguments for Recorded I-III-O₂ Ternary Oxide Ceramics Instability at Low Temperatures beside Ternary Telluride and Sulphide Ceramics

Boubaker

2013

Journal of Ceramics

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Some recorded behaviours differences between chalcopyrite ternary oxide ceramics and telluride and sulphides are investigated in the framework of the recently proposed Lattice Compatibility eory (LCT). Alterations have been evaluated in terms of Urbach tailing and atomic valence shell electrons orbital eigenvalues, which were calculated through several approximations. e aim of the study was mainly an attempt to explain the intriguing problem of difficulties of elaborating chalcopyrite ternary oxide ceramics (I-III-O 2 ) at relatively low temperatures under conditions which allowed crystallization of ternary telluride and sulphides.

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Structural and optical properties of Ag₂S thin films prepared by spray pyrolysis

Cited by 45 publications

References 0 publications

Ultralong Single‐Crystalline Ag₂S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Ultralong Single‐Crystalline Ag₂S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Physico-Chemical Characterization of Sprayed ?-Ag2S Thin Films

The Lattice Compatibility Theory: Arguments for Recorded I-III-O₂ Ternary Oxide Ceramics Instability at Low Temperatures beside Ternary Telluride and Sulphide Ceramics

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Structural and optical properties of Ag2S thin films prepared by spray pyrolysis

Cited by 45 publications

References 0 publications

Ultralong Single‐Crystalline Ag2S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Ultralong Single‐Crystalline Ag2S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Physico-Chemical Characterization of Sprayed ?-Ag2S Thin Films

The Lattice Compatibility Theory: Arguments for Recorded I-III-O2 Ternary Oxide Ceramics Instability at Low Temperatures beside Ternary Telluride and Sulphide Ceramics

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Structural and optical properties of Ag₂S thin films prepared by spray pyrolysis

Ultralong Single‐Crystalline Ag₂S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

Ultralong Single‐Crystalline Ag₂S Nanowires: Promising Candidates for Photoswitches and Room‐Temperature Oxygen Sensors

The Lattice Compatibility Theory: Arguments for Recorded I-III-O₂ Ternary Oxide Ceramics Instability at Low Temperatures beside Ternary Telluride and Sulphide Ceramics