文章基本信息

标题：A novel UV pumped yellow-emitting phosphor Ba2YAlO5:Dy3+ for white light-emitting diodes
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作者：Bin Deng ; Jun Chen ; Chong-song Zhou 等
期刊名称：E3S Web of Conferences
印刷版ISSN：2267-1242
电子版ISSN：2267-1242
出版年度：2019
卷号：79
页码：1-4
DOI：10.1051/e3sconf/20197903005
出版社：EDP Sciences
摘要：A series of novel Dy3+ activated aluminate Ba2Y1-xDyxAlO5 (x = 0.01–0.30) red-emitting phosphors were synthesized through a high-temperature solid-state route at 1380°C. The X-ray diffraction patterns revealed that the samples were well crystallized in the space group P21/c (No. 14). The spectrum analysis revealed that under UV light excitation, Ba2YAlO5:Dy3+ phosphor exhibited blue and yellow peaks corresponding to 4F9/2–6H15/2 transition and 4F9/2–6H13/2 transition, respectively. The optimum dopant concentration of Dy3+ ions is around 2 mol% and the critical transfer distance of Dy3+ is calculated as 29 Å. The concentration quenching mechanism between Dy3+ has been investigated. Results indicate that Ba2YAlO5:Dy3+ offers the excellent optical properties as a potential yellow-emitting phosphor candidate for n-UV LEDs.
其他摘要：A series of novel Dy³⁺ activated aluminate Ba₂Y_{1- x}Dy_xAlO₅ ( x = 0.01–0.30) red-emitting phosphors were synthesized through a high-temperature solid-state route at 1380°C. The X-ray diffraction patterns revealed that the samples were well crystallized in the space group P 2_1/c (No. 14). The spectrum analysis revealed that under UV light excitation, Ba₂YAlO₅:Dy³⁺ phosphor exhibited blue and yellow peaks corresponding to ⁴F_9/2–⁶H_15/2 transition and ⁴F_9/2–⁶H_13/2 transition, respectively. The optimum dopant concentration of Dy³⁺ ions is around 2 mol% and the critical transfer distance of Dy³⁺ is calculated as 29 Å. The concentration quenching mechanism between Dy³⁺ has been investigated. Results indicate that Ba₂YAlO₅:Dy³⁺ offers the excellent optical properties as a potential yellow-emitting phosphor candidate for n-UV LEDs.