Deng Aixia, Tian Xinyu, Zhou Xufeng, Ding Jianyan, Geng Wanying, Wu Quansheng
School of Material Science and Engineering, Liaocheng University, Liaocheng, 252000, PR China.
College of Chemistry and Materials Science, Longyan University, Longyan, Fujian 364000, PR China.
Dalton Trans. 2021 Nov 16;50(44):16377-16385. doi: 10.1039/d1dt03394h.
Owing to the broad application scope of phosphors for light and display, the development of narrow-band light-emitting phosphors has recently gained considerable research attention. In this study, a new type of narrow-band blue light-emitting phosphor, RbHfSiO:Eu, with a full width at half maximum (FWHM) of 64 nm was synthesized successfully. Upon the near visible ultraviolet (NUV) light excitation, the internal quantum efficiency of RbHfSiO:Eu was 68%. It also exhibited good thermal stability, which was higher than that of a commercial blue phosphor (BaMgAlO:Eu) at 150 °C. The significant photoluminescence properties of RbHfSiO:Eu were found to be related to its robust crystal structure, which was investigated in detail. The results indicate that Eu-activated RbHfSiO is a promising phosphor for use in white light-emitting diodes.
由于磷光体在光和显示领域具有广泛的应用范围，近年来窄带发光磷光体的开发受到了相当多的研究关注。在本研究中，成功合成了一种新型窄带蓝光发射磷光体RbHfSiO:Eu，其半高宽（FWHM）为64nm。在近紫外光（NUV）激发下，RbHfSiO:Eu的内量子效率为68%。它还表现出良好的热稳定性，在150°C时高于商用蓝色磷光体（BaMgAlO:Eu）。发现RbHfSiO:Eu显著的光致发光特性与其坚固的晶体结构有关，并对其进行了详细研究。结果表明，Eu激活的RbHfSiO是一种有前途的用于白光发光二极管的磷光体。
