采用络合物溶胶-凝胶法分别制备了不同掺杂浓度的Zn1-xFexO(0≤x≤0.20)、Zn1-xCuxO(0≤x≤0.20)及Zn0.095 Cu0.05-yFeyO(0.01≤y≤0.04)的粉体样品,研究掺杂浓度对ZnO晶体结构及光学性能的影响,利用X射线衍射仪、红外光谱仪、紫外-可见光分光光度计、荧光光谱仪对样品的物相和光学性能进行表征.结果表明,掺杂量小于5％时的Zn1-xFexO、Znl-xCuxO及Zn0.095 Cu0.05-yFeyO样品均为六方纤锌矿型ZnO晶体;掺杂后可见光波段的吸收率与纯ZnO相比明显提高,掺杂ZnO的光学带隙变窄;PL峰位略微蓝移;Fe3+/Cu2+共掺杂ZnO的PL峰发光强度比单掺Cu2+的强,比单掺Fe3+的弱.
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