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首页> 外文期刊>RSC Advances >Structure and luminescence properties of a novel broadband green-emitting oxyapatite-type phosphor
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Structure and luminescence properties of a novel broadband green-emitting oxyapatite-type phosphor

机译：一种新型宽带绿色发光氧化铝型荧光粉的结构和发光性能

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In recent years, synthetic apatite-doped rare-earth luminescent materials and their optical properties have attracted extensive worldwide attention. In this study, a series of novel green phosphors Sr _(2) Y _(3) (SiO _(4) ) _(2) (PO _(4) )O:Eu ~(2+) with apatite structure was fabricated via a high temperature solid-state reaction. X-ray diffraction, structure refinement, photoluminescence excitation, emission spectra, and temperature-dependent emission intensity were employed to describe the phase and property of the samples. Under the excitation of 365 nm, the phosphors emit strong green emission in the broad band range from 400 nm to 700 nm, which almost covers the visible light spectrum. The quenching concentration of Eu ~(2+) in Sr _(2) Y _(3) (SiO _(4) ) _(2) (PO _(4) )O was about 0.05, which was attributed to the dipole–dipole interactions. The evidence that the as-prepared phosphor can be successfully excited by near ultraviolet light indicates that it can be potentially used as a near UV-convertible phosphor for white light-emitting diodes.
机译：近年来，合成磷灰石掺杂的稀土发光材料及其光学性质在全球范围内引起了广泛的关注。在这项研究中，一系列新型绿色磷光体SR _（2）Y _（3）（SiO_（4））_（2）（PO _（4））O：Eu〜（2+）具有磷灰石结构通过高温固态反应制造。 X射线衍射，结构细化，光致发光激发，发射光谱和温度依赖性发射强度用于描述样品的相和性。在365nm的激励下，磷光体在宽带范围内发出强大的绿色发射，范围为400nm至700nm，几乎覆盖了可见光光谱。 Sr _（2）y _（3）中Eu〜（2+）的猝灭浓度（SiO_（4））_（2）（PO _（4））o约0.05，归因于偶极子-dople互动。可以通过近紫外光成功激发AS制备的磷光体的证据表明它可能被用作白色发光二极管的近紫外可换磷光体。

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