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首页> 美国卫生研究院文献>Molecules >Synthesis and Luminescence Properties of a Novel Green-Yellow-Emitting Phosphor BiOCl:Pr3+ for Blue-Light-Based w-LEDs
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Synthesis and Luminescence Properties of a Novel Green-Yellow-Emitting Phosphor BiOCl:Pr3+ for Blue-Light-Based w-LEDs

机译：基于蓝光的w-LEDs的新型绿色发黄光BiOCl：Pr3 +的合成和发光性质

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摘要

The development of white-light-emitting diodes (w-LEDs) makes it meaningful to develop novel high-performance phosphors excited by blue light. Herein, BiOCl:Pr3+ green-yellow phosphors were prepared via a high-temperature solid-state reaction method. The crystal structure, luminescent properties, lifetime, thermal quenching behavior, and quantum yield were studied in detail. The BiOCl:Pr3+ phosphors presented several emission peaks located in green and red regions, under excitation at 453 nm. The CIE coordinates could be tuned along with the changed doping concentration with fair luminescence efficiency. The results also indicated that the optimized doping concentration of Pr3+ ions was at x = 0.0075 because of the concentration quenching behavior resulting from an intense exchange effect. When the temperature reached 150 °C, the intensity of the emission peak at 495 nm could remain at 78% of that at room temperature. The activation energy of 0.20 eV also confirmed that the BiOCl:Pr3+ phosphor exhibited good thermal stability. All these results indicate that the prepared products have potential to be used as a high-performance green-yellow-light-emitting phosphor for blue-light-based w-LEDs.
机译：白光发光二极管（w-LEDs）的开发使开发被蓝光激发的新型高性能荧光粉变得有意义。本文中，通过高温固态反应法制备了BiOCl：Pr 3 + 绿黄色荧光粉。详细研究了晶体结构，发光性能，寿命，热猝灭行为和量子产率。 BiOCl：Pr 3 + 荧光粉在453 nm激发下呈现出几个位于绿色和红色区域的发射峰。 CIE坐标可以与变化的掺杂浓度一起进行调节，并具有合理的发光效率。结果还表明，由于强烈的交换作用引起的浓度猝灭行为，Pr 3 + 离子的最佳掺杂浓度为x = 0.0075。当温度达到150°C时，在495 nm处的发射峰强度可以保持在室温下的78％。 0.20 eV的活化能也证实BiOCl：Pr 3 + 荧光粉具有良好的热稳定性。所有这些结果表明，所制备的产品具有用作基于蓝光的w-LED的高性能绿黄色发光磷光体的潜力。

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