为了优化荧光粉合成工艺条件,本文以Cd(NO3)2·4H2O和Na2 MoO4·2H2O为原料,采用沉淀法制备Eu3+掺杂的CdMoO4微纳米颗粒.在300℃下,分别对样品保温1h,3h,5h,通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)、荧光光谱分析(PL)对样品进行了表征.XRD分析结果表明产物为纯白钨矿型纯四方相CdMoO4.固定发射波长在615 nm,样品激发波长在333 nm左右出现最强锋,在534 nm、464 nm、394 nm处的锐激发谱线分别对应Eu3+的7Fo→5D1、7F0→5D2、7F0→5L6的跃迁,在333 nm光激发时,主发射峰位于615 nm附近,归属于5D0→7F2能级跃迁发射,而位于589 nm附近的弱发射峰归属于5D0→F1跃迁.
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