Jian Xian, Wang Hui, Lee Ming-Hsien, Tian Wei, Chen Guo-Zhang, Chen Wen-Qiao, Ji Wei-Wei, Xu Xin, Yin Liang-Jun
School of Energy Science and Engineering, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu 611731, China.
Department of Physics, Tamkang University, Tamsui, New Taipei 25137, Taiwan.
Materials (Basel). 2017 Jun 29;10(7):723. doi: 10.3390/ma10070723.
Owing to high quantum efficiency, adjustable composition and antioxidation properties of oxynitride phosphors, extensive investigations have focused on their photoluminescence properties under low-energy light excitation (UV or blue light). However, the vacuum ultraviolet (VUV) luminescence properties of oxynitride phosphors are rarely researched. Present work studies the structure and VUV luminescence properties of an oxynitride phosphor: AlON: Eu, Mg, which is synthesized by solid-state reaction. Under 147 nm excitation, it was found that AlON: Eu, Mg phosphor shows a blue emission band centered at about 470 nm. The first principle calculation is used to analyze the origin of the VUV absorption. Compared with BaMgAlO: Eu phosphor, AlON: Eu, Mg phosphor shows better thermal stability.
由于氮氧化物荧光粉具有高量子效率、可调节组成和抗氧化性能，广泛的研究集中在其在低能量光激发（紫外或蓝光）下的光致发光性能。然而，氮氧化物荧光粉的真空紫外（VUV）发光性能很少被研究。目前的工作研究了一种通过固态反应合成的氮氧化物荧光粉AlON: Eu, Mg的结构和VUV发光性能。在147 nm激发下，发现AlON: Eu, Mg荧光粉显示出一个以约470 nm为中心的蓝色发射带。采用第一性原理计算来分析VUV吸收的起源。与BaMgAlO: Eu荧光粉相比，AlON: Eu, Mg荧光粉表现出更好的热稳定性。
