采用液-固-溶液(LSS)法制备了ZnSe:Fe纳米晶,利用X射线粉末衍射(XRD)技术、透射电子显微镜(TEM)、光致发光(PL)谱、紫外-可见吸收(UV-vis)光谱以及傅里叶变换红外(FT-IR)光谱对所制备样品的结构和光学性质进行了表征,研究了掺杂Fe离子对ZnSe纳米晶光学性质的影响规律.实验结果表明所制备的ZnSe:Fe纳米晶为立方闪锌矿结构,粒径在3.5～4.5nm之间,与纯ZnSe相比,ZnSe:Fe纳米晶表现出明显的荧光增强现象,随掺杂Fe离子的浓度的不同,其荧光峰位和强度均有变化.UV-Vis吸收谱表明ZnSe:Fe纳米晶在410nm附近出现吸收峰,与ZnSe体材料相比有明显蓝移,为量子尺寸效应所致.利用Tauc关系计算了ZnSe:Fe纳米晶的能隙,为3.4eV.
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