PROBLEM TO BE SOLVED: To provide a phosphor which can provide an easily producible oxide phosphor and, further, a light-emitting device having high color purity.;SOLUTION: A phosphor comprises a compound represented by a general formula (I): M1aM2bM3cOd as a matrix and Ce as a light-emitting center ion in the matrix (where, in the formula (I), M1 is a divalent metal element including at least Sr; M2 is a trivalent metal element including at least one selected from a group consisting of Sc, Y, and Lu; M3 is a trivalent metal element including at least Al; and a, b, c, and d are numbers in ranges of 5.4 to 6.6, 1.8 to 2.2, 3.6 to 4.4, and 14.0 to 16.0, respectively). The phosphor is represented by, as a composition at a time of charging, Sr6(Y1-xCex)2Al4O15 (where, 0.05≤x≤0.25) and, preferably, its luminescent color is orange or red.;COPYRIGHT: (C)2015,JPO&INPIT
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机译：解决的问题：提供一种可以提供易于生产的氧化物磷光体的磷光体，以及一种具有高色纯度的发光器件。解决方案：磷光体包含由通式（I）表示的化合物：M < Sup> 1 a M 2 b M 3 c O d 为基质，Ce为基质中的发光中心离子（式（I）中，M 1 为至少包含二价金属的元素） Sr; M 2 是包括选自Sc，Y和Lu中的至少一种的三价金属元素; M 3 是包括至少Sc，Y和Lu的三价金属元素。 Al; a，b，c和d分别是5.4至6.6、1.8至2.2、3.6至4.4和14.0至16.0的数字。作为充电时的组成，该荧光体由Sr 6 （Y 1-x Ce x ） 2表示。 Al 4 O 15 （其中0.05≤x≤0.25），并且其发光颜色最好是橙色或红色。版权所有：（C）2015 ，JPO＆INPIT
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