In this paper, the Eu3+ -Eu2+ (4%, molar ratio)-doped xAl2 O3 -ySiO2 (x = 0-2.5, y = 1-5) and xAl2 O3 -zMgO (x = 0-1.5, z = 0-3) composites phosphors with different Al2 O3 to SiO2 (A/S) and Al2 O3 to MgO (A/M) ratios were prepared using a high-temperature solid-state reaction under air atmosphere. The effects of the A/S and A/M on luminescence properties, crystal structure, electron spin resonance, and Commission Internationale de l'Eclairage chromaticity coordinates of the samples were systematically analyzed. These results indicated that the different A/S and A/M ratios in the matrix effectively affected the crystal phase, degrees of self-reduction of Eu3+ , and led the relative emission intensity of Eu2+ /Eu3+ to change and adjust.

中文翻译：

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Eu3 + -Eu2 +掺杂的xAl2 O3 -ySiO2和xAl2 O3 -zMgO复合荧光粉。

在本文中，掺杂Eu3 + -Eu2 +（4％，摩尔比）的xAl2 O3 -ySiO2（x = 0-2.5，y = 1-5）和xAl2O3-zMgO（x = 0-1.5，z = 0- 3）使用高温固态反应在空气气氛下制备具有不同的Al 2 O 3与SiO 2（A / S）和Al 2 O 3与MgO（A / M）比的复合磷光体。系统分析了A / S和A / M对样品的发光性能，晶体结构，电子自旋共振和国际照明委员会色度坐标的影响。这些结果表明，基质中不同的A / S和A / M比有效地影响了晶体相，Eu3 +的自还原度，并导致Eu2 + / Eu3 +的相对发射强度发生变化和调整。