采用微波法制备了Eu2+掺杂的Ba3Si6O12N2绿色氮氧化物荧光粉,着重研究了不同助熔剂:BaCl2、H3BO3、KF和NH4F对Ba3Si6O12N2:Eu2+发光性能的影响.利用X射线衍射(XRD)、荧光光谱仪、扫描电子显微镜(SEM)和量子效率(QE)等检测方法研究了不同助溶剂的作用机理.研究结果表明:添加助溶剂能够显著提高荧光粉的发光强度,添加不同助溶剂制备荧光粉的发光强度大小依次为H3BO3＞KF＞BaCl2＞无助溶剂＞NH4F.当添加1.0wt％的H3BO3时,所制备的荧光粉粒径分布比较均匀,形貌较好,荧光粉的发光强度最大,且与不添加助溶剂制备的荧光粉相比,有较高的量子效率和吸收效率,不同温度下的发射光谱表明其热淬灭性低,荧光寿命较短.
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