ZINC SULPHIDE PHOSPHOR HAVING PHOTO- AND ELECTROLUMINESCENT PROPERTIES, PROCESS FOR PRODUCING SAME, AND SECURITY DOCUMENT, SECURITY FEATURE AND METHOD FOR DETECTING SAME

The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent ph...

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Bibliographische Detailangaben
Hauptverfasser:	KUNATH, CHRISTIAN, KUEN, JAKOB, DEICHSEL, ANDREAS, RÖSLER, SVEN, VOH, MONIKA, PAESCHKE, MANFRED, STARICK, DETLEF
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BOOK COVERS BOOKBINDING CHEMISTRY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES FILES LOOSE LEAVES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PERFORMING OPERATIONS POLISHES PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range than 345 nm to 370 nm, and can thus emit photoluminescent light in the blue color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm in 335 nm, and can thus emit photoluminescent light in the green color region of the visible spectrum.