采用固相法合成Cr4+:Ca2GeO4晶体原料,通过XRD分析确定了合成Cr4+:Ca2GeO4多晶料的最佳温度,计算了Cr4+:Ca2GeO4多晶料的晶格参数.XPS和荧光光谱分析表明多晶料中含有Cr4+ .Cr4+:Ca2GeO4多晶料具有宽的室温荧光光谱,光谱范围为1000~1600 nm,最强荧光发射峰位于1257 nm,这是Cr4+的3T2→3A2能级跃迁导致的荧光发射.
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