Synthese von Y2O2(CN2) und Leuchtstoffeigenschaften von Y2O2(CN2):Eu |
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| Authors: | Jörg Sindlinger Jochen Glaser Helga Bettentrup Thomas Jüstel H‐Jürgen Meyer Prof Dr |
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| Institution: | 1. Tübingen, Abteilung für Festk?rperchemie und Theoretische Anorganische Chemie am Institut für Anorganische Chemie der Universit?t;2. Münster, Fachbereich Chemieingenieurwesen der Fachhochschule Münster;3. Tübingen, Abteilung für Festk?rperchemie und Theoretische Anorganische Chemie am Institut für Anorganische Chemie der Universit?tAbteilung für Festk?rperchemie und Theoretische Anorganische Chemie, Institut für Anorganische Chemie, Eberhard‐Karls‐Universit?t Tübingen, Auf der Morgenstelle 18, D‐72076 Tübingen, Germany, Tel.: +49‐7071‐2976226;4. Fax: +49‐7071‐295702 |
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| Abstract: | Synthesis of Y2O2(CN2) and Luminescence Properties of Y2O2(CN2):Eu Crystalline powders of the new compound Y2O2(CN2) were prepared by solid state reactions from different mixtures of YCl3/YOCl/Y2O3 and Li2(CN2) at temperatures between 620 °C and 650 °C. Structure refinements based on X‐ray powder diffraction revealed that trigonal Y2O2(CN2) crystallizes with a structure that is closely related to that of Y2O2S, whereas linear N‐C‐N units replace sulphur atoms in Y2O2S. In addition, a hexagonal polytype of Y2O2(CN2) was obtained in which a different stacking sequence of yttrium atoms creates a doubling of the c‐axis. Europium‐doped samples of Y2O2(CN2) were prepared and the luminescence properties of Y2O2(CN2):Eu are presented. |
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| Keywords: | Yttrium Polytypism Crystal structure Europium Luminescence |
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