HIGHLY INTENSE STRESS-LUMINESCENT MATERIAL EMITTING ULTRAVIOLET RAY, ITS MANUFACTURING METHOD, AND

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PROBLEM TO BE SOLVED : To provide a luminescent material that has a characteristic crystal structure and emits intense light. SOLUTION : The stress-luminescent material has a structure where an alkali metal ion and an alkaline earth metal ion are inserted in a matrix structure constituted of molecules having a polyhedral structure and a part thereof is replaced by an ion of either one of rare earth metals, transition metals, group III metals and group IV metals. The stress-luminescent material has a triclinic, tetragonal or trigonal structure and emits ultraviolet rays. COPYRIGHT : (C)2007, JPO&INPIT