首页> 外文期刊>Journal of the Ceramic Society of Japan >Synthesis of (Ca1?xSrx)4Si2O7F2 oxyfluoride solid solutions and their photoluminescence properties activated by Eu2+ ions
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Synthesis of (Ca1?xSrx)4Si2O7F2 oxyfluoride solid solutions and their photoluminescence properties activated by Eu2+ ions

机译:(Ca1?xSrx)4Si2O7F2氟氧化物固溶体的合成及其Eu2 +离子激活的光致发光性质

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The synthesis of oxyfluoride solid solutions with the composition (Ca1? x Sr x )4Si2O7F2 is reported in this study. (Ca1? x Sr x )4Si2O7F2 is found to form a solid solution within the entire composition range. Synthesis of Sr4Si2O7F2, which is the first compound in the Sr–Si–O–F system, can be regarded as one of the interesting results of this study. The Eu2+-activated (Ca1? x Sr x )4Si2O7F2 solid solutions, except for Sr4Si2O7F2 exhibited photoluminescence under excitation at 300–450 nm at room temperature. The samples with x = 0.25–0.75 showed a broad red emission band with a peak around 630 nm, whereas the Ca4Si2O7F2:Eu2+ ( x = 0) showed blue emission with a peak at 470 nm. Thus, the substitution of Sr for Ca in Ca4SiO7F2:Eu2+ changed the photoluminescence properties remarkably.
机译:组成为(Ca 1? x Sr x 4 Si 的氟氧化物固溶体的合成本研究报道了2 O 7 F 2 。 (Ca 1? x Sr x 4 Si 2 O 发现7 F 2 在整个组成范围内形成固溶体。 Sr 4 Si 2 O 7 F 2 的合成,这是Sr–Si–中的第一个化合物O-F系统,可以看作是这项研究的有趣结果之一。 Eu 2 + 激活的(Ca 1? x Sr x 4 Si 2 O 7 F 2 固溶体,Sr 4 Si 2 除外O 7 F 2 在室温下于300–450 nm激发下显示出光致发光。 x = 0.25–0.75的样品显示出宽的红色发射带,其峰值在630 nm附近,而Ca 4 Si 2 O 7 F 2 :Eu 2 + (x = 0)显示蓝色发射,峰值在470 nm。因此,在Ca 4 SiO 7 F 2 :Eu 2 + 中用Sr代替Ca改变了光致发光性能显着。

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