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本文合成了发射蓝紫色光的镁硅钙石 Ca3Mg Si2 O8:Ce3+荧光体。测试了该荧光体的激发和发射光谱。利用这些光谱结果和 Van Uitert经验公式 ,结合对 Ca3Mg Si2 O8晶体的结构研究 ,确认 Ca3Mg Si2 O8:Ce3+中存在两种性质有差异的 Ce3+发光中心 ,它们分别占据基质中的两种八配位的钙格位。
In this paper, a blue-violet luminescent CaSiMg Si2 O8: Ce3 + phosphor was synthesized. The excitation and emission spectra of the phosphor were tested. Using these spectroscopic results and the Van Uitert empirical formula and the structural studies on the Ca3Mg Si2 O8 crystal, it is confirmed that there are two Ce3 + luminescent centers with different properties in Ca3Mg Si2 O8: Ce3 +, which respectively occupy two eight-coordinated Calcium grid.