Eu3+ doped M3La2Si3O12 (M = Mg2+, Ca2+, Sr2+, Ba2+) materials were prepared using sol-gel technique. The samples were prepared at a temperature of 950oC using 0.01-0.05 mole of Eu3+ ion to examine worth of amount of activator ion on luminous intensity. Photoluminescence characteristics of these Eu3+ incorporated inorganic fluorescent materials were explored using photoluminescence (PL) emission spectroscopy for display devices. These phosphor materials showed stable colour coordinates and their luminescence intensity enhanced with temperature. Upon 393 nm excitation, Eu(III) incorporated fluorescent materials exhibited intense red emission with high colour purity including three peaks at 589, 613-615 (dominant) and 650-655 nm corresponding to 5D0→7F1-3 transition. The structural parameters were determined using powder X-ray diffraction (PXRD) and transmission electron microscopy (TEM) techniques. The presence of sharp and intense peaks in the diffraction patterns confirmed high crystalline nature of the prepared materials that improved with increasing temperature. TEM images showed spherical particles with 13-36 nm size. Fourier transform infrared study was employed to determine the stretching frequencies of silicate groups and metal available in the prepared materials. The strong PL response and high chemical stability of Eu3+ doped M3La2Si3O12 phosphors made them suitable materials for applications in the full-colour displays and white light emitting diodes (WLEDs). GRAPHICAL ABSTRACT

中文翻译：

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用于显示应用的基于硅酸盐晶格的 M3La2Si3O12（M = Mg2+、Ca2+、Sr2+ 和 Ba2+）纳米磷光体的合成和光电表征

Eu3+ 掺杂的 M3La2Si3O12 (M = Mg2+, Ca2+, Sr2+, Ba2+) 材料使用溶胶-凝胶技术制备。样品在 950oC 的温度下制备，使用 0.01-0.05 摩尔的 Eu3+ 离子来检查活化剂离子的量对发光强度的影响。使用用于显示设备的光致发光 (PL) 发射光谱研究了这些掺入 Eu3+ 的无机荧光材料的光致发光特性。这些磷光体材料表现出稳定的色坐标，并且它们的发光强度随温度而增强。在 393 nm 激发下，掺入 Eu(III) 的荧光材料表现出强烈的红色发射，具有高色纯度，包括 589、613-615（主要）和 650-655 nm 处的三个峰，对应于 5D0→7F1-3 跃迁。使用粉末 X 射线衍射 (PXRD) 和透射电子显微镜 (TEM) 技术确定结构参数。衍射图中尖锐而强烈的峰的存在证实了所制备材料的高结晶性质，随着温度的升高而改善。TEM 图像显示具有 13-36 nm 大小的球形颗粒。采用傅里叶变换红外研究来确定制备材料中可用的硅酸盐基团和金属的拉伸频率。Eu3+ 掺杂的 M3La2Si3O12 磷光体的强 PL 响应和高化学稳定性使其成为全彩显示器和白光发光二极管 (WLED) 应用的合适材料。图形概要 衍射图中尖锐和强烈峰的存在证实了所制备材料的高结晶性质，随着温度的升高而改善。TEM 图像显示具有 13-36 nm 大小的球形颗粒。采用傅里叶变换红外研究来确定制备材料中可用的硅酸盐基团和金属的拉伸频率。Eu3+ 掺杂的 M3La2Si3O12 荧光粉的强 PL 响应和高化学稳定性使其成为全彩显示器和白光发光二极管 (WLED) 应用的合适材料。图形概要 衍射图中尖锐和强烈峰的存在证实了所制备材料的高结晶性质，随着温度的升高而改善。TEM 图像显示具有 13-36 nm 大小的球形颗粒。采用傅里叶变换红外研究来确定制备材料中可用的硅酸盐基团和金属的拉伸频率。Eu3+ 掺杂的 M3La2Si3O12 磷光体的强 PL 响应和高化学稳定性使其成为全彩显示器和白光发光二极管 (WLED) 应用的合适材料。图形概要 采用傅里叶变换红外研究来确定制备材料中可用的硅酸盐基团和金属的拉伸频率。Eu3+ 掺杂的 M3La2Si3O12 磷光体的强 PL 响应和高化学稳定性使其成为全彩显示器和白光发光二极管 (WLED) 应用的合适材料。图形概要 采用傅里叶变换红外研究来确定制备材料中可用的硅酸盐基团和金属的拉伸频率。Eu3+ 掺杂的 M3La2Si3O12 磷光体的强 PL 响应和高化学稳定性使其成为全彩显示器和白光发光二极管 (WLED) 应用的合适材料。图形概要