Abstract The present paper describes the synthesis of 0.1 mol% Gadolinium (Gd) doped Zinc oxide (ZnO) nanophosphor by solution combustion method using Oxalyl dihydrazide (ODH) fuel. Powder X-ray diffraction (PXRD) peaks are well matched with the standard hexagonal wurtzite structure of ZnO (JCPDS card no. 36-1451). SEM and TEM analysis reveals porous morphology of as -formed sample with particles having narrow size distribution in the range ∼60–70 nm, in good agreement with XRD data. The PL spectrum of Gd doped ZnO sample exhibits an extra blue emission at 441 nm (∼2.81 eV) in addition to the emission bands from undoped ZnO. From the TL data of ZnO:Gd nanophosphor with UV irradiation, it is observed that considerable amount of re-trapping is taking place in all the TL second order peaks. The EPR spectrum exhibits a number of resonance signals suggesting that Gd3+ ions are experiencing different crystal field strength and Zeeman interactions.

中文翻译：

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Gd 3+ 掺杂的ZnO纳米磷光体的发光和光谱研究

摘要 本文描述了使用草酰二酰肼 (ODH) 燃料通过溶液燃烧法合成 0.1 mol% 钆 (Gd) 掺杂的氧化锌 (ZnO) 纳米磷光体。粉末 X 射线衍射 (PXRD) 峰与 ZnO 的标准六方纤锌矿结构（JCPDS 卡号 36-1451）非常匹配。SEM 和 TEM 分析揭示了所形成样品的多孔形态，其中颗粒具有在 ~60-70 nm 范围内的窄尺寸分布，与 XRD 数据非常一致。除了来自未掺杂 ZnO 的发射带之外，Gd 掺杂的 ZnO 样品的 PL 光谱在 441 nm (~2.81 eV) 处表现出额外的蓝色发射。从紫外光照射下 ZnO:Gd 纳米磷光体的 TL 数据，观察到在所有 TL 二级峰中发生了大量的重新捕获。