Film-like fluorescent material and its manufacturing method

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PROBLEM TO BE SOLVED : To find out a method for making a light emitting component be present in a membrane-shaped emitter, moreover intensively in the vicinity of a surface of a membrane expected to emit light, and to provide a membrane-shaped fluorescence emitter which emits light with high intensity. SOLUTION : In the membrane-shaped fluorescence emitter, a rare earth element ion and a metal oxide are present in the ion cluster of an ion exchange membrane which can form the ion cluster. Also, in the method for manufacturing the membrane-shaped fluorescence emitter, a cation in the ion exchange membrane is ion-exchanged with the rare earth element ion, subsequently the obtained ion exchange membrane including the rare earth element ion is immersed in a reaction solution having a metal fluoride complex, and the metal oxide is precipitated in the ion cluster. COPYRIGHT : (C)2011, JPO&INPIT