7700233a_chnology__Application_Magazine__Description
[Planned Topic*] „Best Papers” at LpS 2014: Phosphors, Process Technologies [Keywords - Content] Phosphors, stability, color, efficiency, [Description] 
Al2O3 Coated Europium-Activated Phosphor for use in COB Technology Yellow-red emitting phosphors are important for high quality white light generation with LEDs. Unfortunately, these phosphors are often less efficient or degrade relatively fast. Therefore researchers and companies are looking for new types and production methods to improve these properties. Eu2+ activated nitride phosphors are very popular candidates. A CaAlSiN3:Eu2+ phosphor was coated with Al2O3 to obtain an Al2O3 coating in order to improve its stability against moisture and oxidation for use in chip on board technology. Different properties including luminescence properties were determined. To improve material properties, a method to prepare CaAlSiN3:Eu2+ phosphor was investigated and different properties including luminescence were determined.
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