LIGHT EMITTING DEVICE AND ITS MANUFACTURING METHOD

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PROBLEM TO BE SOLVED : To provide an electroluminescent light-emitting element which has high light-emitting brightness. SOLUTION : The EL light-emitting element 1 has an EL light-emitting layer 13 for emitting light by application of voltage while the EL light-emitting layer 13 contains one or two or more kinds of cations selected from the group of an alkaline metal ion, an alkaline earth metal ion, and a rare earth ion, and a fluoride ion. The composition ratio of the fluorine ion to the cation is larger than 0.5. COPYRIGHT : (C)2007, JPO&INPIT