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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Blue and green emissions with high color purity from nanocrystalline Ca_2Gd_8Si_6O_(26):Ln (Ln = Tm or Er) phosphors
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Blue and green emissions with high color purity from nanocrystalline Ca_2Gd_8Si_6O_(26):Ln (Ln = Tm or Er) phosphors

机译：纳米晶Ca_2Gd_8Si_6O_（26）：Ln（Ln = Tm或Er）荧光粉发出的蓝色和绿色具有高色纯度

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摘要

Blue and green light emissive nanocrystalline Ca_2Gd_8Si_6O_(26) (CGS):Tm~(3+) and CGS:Er~(3+) phosphors with high color purity were prepared by solvothermal reaction method. The structural and morphological properties of these phosphors were evaluated by the powder X-ray diffraction (XRD) and scanning electron microscopy, respectively. From the XRD results, Tm~(3+):CGS and Er~(3+):CGS phosphors had the characteristic peaks of oxyapatite in the hexagonal lattice structure. The visible luminescence properties of phosphors were obtained by ultraviolet (UV) or near-UV light and low voltage electron beam (0.5-5 kV) excitation. The photoluminescence and cathodoluminescence properties were investigated by changing the variation of Tm~(3+) or Er~(3+) concentrations and the acceleration voltage, respectively.
机译：通过溶剂热反应法制备了具有高色纯度的蓝色和绿色发光纳米晶Ca_2Gd_8Si_6O_（26）（CGS）：Tm〜（3+）和CGS：Er〜（3+）荧光粉。这些荧光粉的结构和形态特性分别通过粉末X射线衍射（XRD）和扫描电子显微镜进行评估。根据XRD结果，Tm〜（3 +）：CGS和Er〜（3 +）：CGS荧光粉在六方晶格结构中具有羟磷灰石的特征峰。磷光体的可见光发光特性是通过紫外（UV）或近紫外光和低压电子束（0.5-5 kV）激发获得的。通过改变Tm〜（3+）或Er〜（3+）浓度和加速电压的变化来研究光致发光和阴极发光性质。

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