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采用KOH-水热的方法制备出方块形纳米级Gd2O3∶Sm,并测定了它的光谱,研究了焙烧温度对发光强度的影响,结果表明,热处理对颗粒的形状影响较小,甚至800℃焙烧仍然能得到尺寸在50 nm~100 nm的纳米方块。样品在569 nm、574 nm、584 nm,598 nm、606 nm、615 nm、621 nm,655 nm、668 nm处有发射峰,分别归属于4G5/2—6H5/2,4G5/2—6H7/2,4G5/2—6H9/2;其中,位于606 nm处4G5/2—6H7/2跃迁最强,样品发射出明亮的橙色光,400℃焙烧得到的样品其发光强度明显弱于800℃焙烧得到的样品。
The square nanosize Gd2O3: Sm was prepared by KOH-hydrothermal method. The spectra of the nanosized Gd2O3: Sm were measured. The effect of calcination temperature on the luminescence intensity was studied. The results showed that the heat treatment had little effect on the shape of the particles, Still can get the size of 50 nm ~ 100 nm nano-box. The emission peaks at 569 nm, 574 nm, 584 nm, 598 nm, 606 nm, 615 nm, 621 nm, 655 nm and 668 nm were assigned to 4G5 / 2-6H5 / 2,4G5 / 2-6H7 / 2,4G5 / 2-6H9 / 2. Among them, the transition of 4G5 / 2-6H7 / 2 at 606 nm is strongest, and the sample emits bright orange light. The luminescence intensity of the sample obtained after calcination at 400 ℃ is obviously weaker than that at 800 ℃ The resulting sample.