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以Zn(NO3)2、(NH4)2CO3与Y(NO3)3为初始原料,采用水热法制备了棒状和枝状ZnO及掺杂Y的ZnO纳米晶。采用XRD、Raman、FESEM、EDAX和PL方法对合成产物形貌与发光性能进行表征。XRD与Raman的研究结果表明,合成的棒状和枝状ZnO纳米晶为六方纤锌矿单晶;XRD与FESEM的测试结果表明,pH值对水热产物的晶相及形貌有重要的影响;XRD结合EDAX的分析结果表明,热处理后的水热产物中Y元素掺入了ZnO基体;ZnO及ZnO-Y2O3的纳米晶PL谱的结果表明,产物的发光性能与制备方式有关,与此同时,ZnO-Y2O3纳米晶的本征发光峰发生红移,其结果与Y元素与ZnO之间的能量传递有关。
The rod-shaped and dendritic ZnO and the Y-doped ZnO nanocrystals were prepared by hydrothermal method using Zn (NO3) 2, (NH4) 2CO3 and Y (NO3) 3 as starting materials. The morphology and luminescent properties of the synthesized products were characterized by XRD, Raman, FESEM, EDAX and PL methods. XRD and Raman results show that the synthesized rod-shaped and dendritic ZnO nanocrystals hexagonal wurtzite single crystal; XRD and FESEM test results show that the pH value of hydrothermal products have a significant impact on the crystalline phase and morphology; XRD The results of EDAX analysis show that the Y element in the hydrothermal product is doped into the ZnO matrix. The PL spectra of ZnO and ZnO-Y2O3 nanocrystals show that the luminescent properties of the products are related to the preparation methods. Meanwhile, ZnO The red shift of the intrinsic luminescence peak of -Y2O3 nanocrystal is related to the energy transfer between Y element and ZnO.