ULTRAVIOLET LIGHT EMITTING PHOSPHOR, LIGHT EMITTING ELEMENT, AND LIGHT EMITTING DEVICE

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PROBLEM TO BE SOLVED : To provide an ultraviolet light emitting phosphor that exhibits a strong emission peak particularly in an ultraviolet region around 360 nm by ultraviolet irradiation. SOLUTION : An ultraviolet light emitting phosphor contains cerium elements, calcium elements, phosphorus elements, and oxygen elements, with the molar ratio x of cerium elements contained being 0

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