FREMGANGSMAADE TIL FREMSTILLING AF ET METALTELLURID

A method of making pure hydrogen telluride is disclosed, involving the reaction of atomic hydrogen (produced by the microwave-induced dissociation of hydrogen gas) on pure metallic tellurium (9). The invention also provides a controlled method of making metal tellurides (especially cadmium mercury t...

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Bibliographische Detailangaben
Hauptverfasser:	HYLIANDS MICHAEL JAMES, WOODHOUSE KAREN TACE, BEVAN MALCOLM JOHN
Format:	Patent
Sprache:	dan
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOUNDS THEREOF CRYSTAL GROWTH DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	A method of making pure hydrogen telluride is disclosed, involving the reaction of atomic hydrogen (produced by the microwave-induced dissociation of hydrogen gas) on pure metallic tellurium (9). The invention also provides a controlled method of making metal tellurides (especially cadmium mercury telluride for use in photodetector applications) involving the thermal decomposition of hydrogen telluride (however produced) over a hot substrate (14) in the presence of gaseous source(s) of the appropriate metal(s) (11). The use of hydrogen telluride (which has hitherto been considered to be too explosively unstable to be useful) enables cadmium mercury telluride to be synthesised at temperatures below 250 DEG C.