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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >RbBaPO4:Eu~(2+): a new alternative blue-emitting phosphor for UV-based white light-emitting diodes
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RbBaPO4:Eu~(2+): a new alternative blue-emitting phosphor for UV-based white light-emitting diodes

机译：RbBaPO4：Eu〜（2+）：一种用于基于紫外线的白色发光二极管的新型替代蓝色发光磷光体

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摘要

A novel blue-emitting phosphor on a phosphate-based host matrix, RbBaPO4:Eu~(2+) (RBP), was synthesized by a solid-state reaction. This phosphor could be excited efficiently by ultra violet-visible light in the 220-420 nm range to exhibit a highly efficient emission peak in the range of 420-440 nm. To investigate the possibility of commercial use, it was compared with the commercial blue phosphors of BaMgAl_(10)Oi_(17):Eu~(2+) (BAM) and Sr3MgSi2O8:Eu~(2+) (SMS) to assess the photoluminescence properties. Compared to commercial phosphors, RBP displayed enhanced photoluminescence properties, in this case a high quantum efficiency and excellent thermal stability under near-Ultra Violet (n-UV) excitation. Furthermore, bright white light-emitting diodes (LEDs) were fabricated by integrating the RBP phosphor, along with commercial green/red phosphors, into n-UV LEDs. These results strongly suggest that the newly discovered RBP phosphor can be commercially utilized in UV-based white LEDs.
机译：通过固相反应合成了基于磷酸盐的基质上的新型发蓝光的荧光粉RbBaPO4：Eu〜（2+）（RBP）。该磷光体可以被220-420 nm范围内的紫外可见光有效激发，从而在420-440 nm范围内显示出高效的发射峰。为了研究商业用途的可能性，将其与BaMgAl_（10）Oi_（17）：Eu〜（2+）（BAM）和Sr3MgSi2O8：Eu〜（2+）（SMS）的商业蓝色荧光粉进行了比较光致发光特性。与商业荧光粉相比，RBP显示出增强的光致发光特性，在这种情况下，在近紫外（n-UV）激发下具有高量子效率和出色的热稳定性。此外，通过将RBP磷光体与商用绿色/红色磷光体集成到n-UV LED中来制造亮白色发光二极管（LED）。这些结果强烈表明，新发现的RBP荧光粉可在基于UV的白光LED中商业应用。

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