Importance

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Abstract

The invention relates to compounds containing an anionic skeleton structure, dopants and cations, where

a. the anionic skeleton structure is characterised by coordination tetrahedra GL4−, where G stands for silicon, and L stands for N and O,b. the cations are selected from the alkaline-earth metals,c. the dopant present is trivalent cerium or a mixture of trivalent cerium and divalent europium,d. the charge compensation of the cerium doping takes place i) via corresponding replacement of alkaline-earth metal cations by alkali-metal cations and/or ii) via a corresponding increase in the nitrogen content and/or iii) via a corresponding reduction in the cations,to a process for the preparation of these compounds, and to the use thereof as conversion phosphors.

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First Claim