微波水热法合成Eu^(3+)掺杂GaN材料

SYNTHESIS AND CHARACTERIZATION OF GAN NANORODS BY MICROWAVE HYDROTHERMAL METHOD

采用氧化镓(Ga2O3)为主要原料,以氧化铕(Eu2O3)为掺杂剂,在微波水热条件下合成了亚微米级前驱体。然后经高温氨化合成纤锌矿结构GaN:Eu3+。X-射线衍射(XRD)、扫描电子显微镜(SEM)和荧光分光光度计分别对样品的结构、形貌及光致发光进行了表征。分析结果得出,GaN:Eu3+纳米棒为六方纤锌矿结构且结晶良好。GaN:Eu3+纳米粉呈长径比约为8∶1的棒状(直径约600nm,长约5μm);光致发光(PL)显示合成产物GaN:Eu3+发光性能较未掺杂时有较大改善,说明微量稀土掺杂可以提高GaN的发光性能。

The GaN ：Eu3＋ submicron rods were successfully synthesized by means of a combination of microwave hydrothermal process and sintering at high temperature using Ga2O3 as raw material.X-ray powder diffraction（XRD） and scanning electronmicroscope（SEM） were applied to characterize the compositions and morphologies of the products,and luminescence properities were measured by Fluorescence Spectrophotometer.The results showed that the submicron rods with aspect ratio of 8（diameter of 600nm and length of 5um） were hexagonal wurtzite structure.The PL spectrum of GaN ：Eu3＋ submicron rods at room temperature showed a small quality of Eu-doped can improve luminescence properties of GaN.