A series of Bi sensitized SrGaO:0.08Eu phosphors have been synthesized by high temperature solid-state reaction method. The structural and surface morphological studies have been characterized by X-ray diffraction, Field emission scanning electron microscopy and Energy dispersive X-ray analysis. The optical and luminescence properties of phosphors are done using UV–Visible absorption spectroscopy, photoluminescence excitation and emission spectra and mechanoluminescence studies. X-ray diffraction analysis shows that the phosphors are single phase with monoclinic structure. The intensity of prominent red emission enhanced with the incorporation of Bi ions in SrGaO:0.08Eu phosphors due to the effective energy transfer between Bi and Eu ions. The optimized SrGaO:0.08Eu,0.05Bi phosphor has excellent thermal stability about 96.7% with an activation energy of 0.253 eV. These phosphors can exhibit better mechanoluminescence properties without any irradiation. The synthesized phosphors can be used in solid state lighting, phosphor converted white light emitting diodes and stress sensing applications etc.

中文翻译：

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用于荧光粉转换 WLED 应用的热稳定且发红光的铋离子敏化 SrGa2O4:Eu3+ 荧光粉

采用高温固相反应法合成了一系列Bi敏化SrGaO:0.08Eu荧光粉。结构和表面形态研究已通过 X 射线衍射、场发射扫描电子显微镜和能量色散 X 射线分析进行了表征。荧光粉的光学和发光特性是通过紫外-可见吸收光谱、光致发光激发和发射光谱以及机械发光研究来完成的。 X射线衍射分析表明荧光粉为单相单斜结构。由于 Bi 和 Eu 离子之间的有效能量转移，在 SrGaO:0.08Eu 荧光粉中掺入 Bi 离子增强了显着的红色发射强度。优化后的SrGaO:0.08Eu,0.05Bi荧光粉具有优异的热稳定性，约为96.7%，活化能为0.253 eV。这些荧光粉无需任何照射即可表现出更好的机械发光性能。合成的荧光粉可用于固态照明、荧光粉转换白光发光二极管和应力传感应用等。