Hydrothermal Syntheses of Photoconductive Cadmium Sulfide

Kremheller, A.; Levine, Albert K.

doi:10.1063/1.1722847

Cited by 9 publications

(3 citation statements)

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“…The hydrothermal method has been described in some detail in previous publications (7); therefore, only a brief account of the method is given here. Hydrothermal synthesis employs aqueous or liquid solution of the component materials, sometimes with certain additives, at temperatures considerably above the normal boiling point of the solution and under pressures of several hundred atmospheres.…”

Section: Methodsmentioning

confidence: 99%

“…Utilizing processing techniques introduced by Allen and Crenshaw (6), Kremheller and Levine (7) succeeded in hydrothermally preparing electronically active II-VI compounds, such as photoconductive cadmium sulfide and various related luminescent materials. This paper reports on the extension of these investigations to the synthesis of binary solid solutions of II-VI compounds.…”

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Hydrothermal Preparation of Two-Component Solid Solutions from II–VI Compounds

Kremheller¹,

Levine

Gashurov³

1960

J. Electrochem. Soc.

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The hydrothermal synthesis of binary solid solutions of inorganic phosphors and photoconductors is described. This method depends on the increased reactivity between the components and ease of crystal growth in an aqueous solution maintained at high temperature under a confining pressure. The hydrothermal method offers the advantages of a sealed system and easily reproducible experimental conditions. Solid solutions of ZnS-HgS, CdS-HgS, and ZnS-CdS have been prepared by this method. Results of optical absorption measurements, x-ray analysis, microscopic studies, and the spectral photoresponse of the solid solutions formed are presented.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

Hydrothermal Preparation of Two-Component Solid Solutions from II–VI Compounds

Kremheller¹,

Levine

Gashurov³

1960

J. Electrochem. Soc.

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“…Wesch (4) has described a high-pressure furnace by means of which the preparation of pure HgS phosphors was mentioned. Kremheller and Levine (5) prepared (Zn, Hg)S and (Cd, Hg)S solid solutions by aqueous recrystallization under pressure and at temperatures well 1 Electroluminescence or electroluminescent is hereafter abbreviated EL.…”

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(Zn,Hg)S and (Zn,Cd,Hg)S Electroluminescent Phosphors

Wachtel

1960

J. Electrochem. Soc.

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Solid solutions of false(normalZn,normalHgfalse)S prepared by firing in sealed silica tubes are cubic in structure. With suitable additions of Cu and a coactivator, photo‐luminescence and electroluminescence are obtained. The coactivators used were halides, Ga, or In. The electroluminescence in the red consists of two emission bands which do not appear to be analogous to the blue and green emission bands of Cu, Cl in normalZnS . The quantum efficiency is of the same order of magnitude as that of normalZnS:normalCu,normalCl , but the emission bandwidth is about twice as large and the red electroluminescence consists of emission located to a large extent in the infrared. normalHgS tends to retain the cubic structure of ternary false(normalZn,normalCd,normalHgfalse)S systems provided that the normalCd/normalHg ratio does not exceed certain limits; until this is so, the introduction of Cd causes increased electroluminescence.

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Einfaches Verfahren zur Herstellung von hochreinem hexagonalem Cadmiumsulfid

Weisbeck

1964

Chemie Ingenieur Technik

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Nach dem neuen Verfahren läßt sich in einem einzigen Schritt innerhalb einiger Stunden aus billigem, technischem Cadmiumsulfid, das auch stark verunreinigt sein kann, ein hexagonales, stöchiometrisches CdS hoher Dichte in Form dicker polykristalliner Schichten mit einem gesamten Verunreinigungsgehalt von etwa 20 ppm bei ca. 60% Ausbeute gewinnen. Das Verfahren ähnelt einer fraktionierten Sublimation bzw. Destillation im Vakuum. Das Verfahren läßt sich auch auf andere Verbindungen zwischen Elementen der zweiten und sechsten Hauptgruppe des Periodensystems (II/VI‐Verbindungen) erfolgreich anwenden.

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Hydrothermal Syntheses of Photoconductive Cadmium Sulfide

Abstract: Articles you may be interested inPhotoeffects in cadmium sulfide and sulfoselenide powders: A reexamination by microwave photoconductivity J.

Cited by 9 publications

References 2 publications

Hydrothermal Preparation of Two-Component Solid Solutions from II–VI Compounds

Hydrothermal Preparation of Two-Component Solid Solutions from II–VI Compounds

(Zn,Hg)S and (Zn,Cd,Hg)S Electroluminescent Phosphors

Einfaches Verfahren zur Herstellung von hochreinem hexagonalem Cadmiumsulfid

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