Luminescent hydrated strontium-fluosilicates, process for their preparation, their use and process for producing black light by means of these compositions

摘要

Hydrated strontium fluosilicates phosphor having the formula Sr _1-x Eu ²⁺ If F _s, H20 2 wherein 0 x ≤ 0.5.; These luminescent materials are particularly useful in the discharge lamps to produce black light.