Preparation and X-ray luminescence of Ba4±xCe3±xF17±x solid solutions

Single-phase BaF 2 :Ce solid solutions containing 30 -40 mol.% cerium with the simultaneous entry of potassium into the crystal lattice in an amount of 0.7 -0.8 mol.% were prepared by coprecipitation from aqueous nitrate solutions with potassium fluoride as the fluoridating agent.The cerium X-ray luminescence intensity increases in response to increasing cerium concentration contrary to the concentration quenching effect.