Synthesis of a Novel Bluish-Green Emitting Oxynitride Ca<sub>3</sub>Al<sub>8</sub>Si<sub>4</sub>O<sub>17</sub>N<sub>4</sub>:Eu<sup>2+</sup>Phosphor in a CaAl<sub>4-x</sub>Si<sub>x</sub>O<sub>7-x</sub>N<sub>x</sub>Solid Solution System

• 作者: Hideki Kato Jihae Kim Makoto Kobayashi Masato Kakihana Yasushi Sato
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 化学
• 关键词: OXYNITRIDE PHOSPHOR Eu2+ Activator Ca3Al8Si4O17N4:Eu2+ Solid Solution
• 年，卷（期）: 2013,（6）
• 页码范围: 29-33
• 页数: 5页
• 分类号: O6

摘要

Synthesis of oxynitride solid solutions CaAl4-xSixO7-xNx:Eu2+ (x = 0 - 4) was attempted by the solid state reaction (SSR) methods using Si3N4 and AlN as nitrogen sources. The Ca3Al8Si4O17N4 (x = 4/3) sample with the high phase purity was obtained when AlN was used as a nitrogen source whereas the sample synthesized using Si3N4 as another nitrogen source contained a Ca2Al2SiO7 impurity. Thus, it was revealed that AlN was a preferable nitrogen source for the synthesis of Ca3Al8Si4O17N4 by the SSR method. The solid solutions around x = 4/3 activated with Eu2+ exhibited bluish-green luminescence with emission maxima at 480 nm by the excitation at 250 - 450 nm. Thus, the CaAl4-xSixO7-xNx: Eu2+ solid solutions especially for Ca3Al8Si4O17N4:Eu2+ (x = 4/3) were developed as novel Eu2+