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This work concerns the particle coating of the UV-C emitting phosphor YPO4:Bi, targeting a stability enhancement of the phosphor material for Xe excimer lamp operation. To this end, the material is coated by the wide band gap material Al2O3. In order to obtain a thin and homogeneous coating layer, a novel process based on the photochemical cleavage of NaN3 in water was developed. This results in a...
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