Cai Peiqing, Qin Lin, Chen Cuili, Wang Jing, Seo Hyo Jin
Department of Physics and Interdisciplinary Program of Biomedical, Mechanical and Electrical Engineering, Pukyong National University, Busan 608-737, Republic of Korea.
Dalton Trans. 2017 Oct 24;46(41):14331-14340. doi: 10.1039/c7dt02751f.
A novel red emitting CsWOF:Mn phosphor was successfully synthesized by a two-step wet chemical method. The crystal structure, morphology, and elemental composition were confirmed by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS), respectively. The luminescence properties were investigated from emission, excitation and luminescence decay curves in the temperature region of 10-500 K. The application of non-contact optical thermometry of CsWOF:Mn based on the fluorescence intensity ratio (FIR) of the two coupled anti-Stokes and Stokes sidebands is discussed. The as-prepared CsWOF:Mn phosphor shows a bright narrow red emission at 632 nm under excitation by a blue lamp at 470 nm and it also presents a broad and yellow-white intrinsic tungstate emission (∼520 nm) under UV excitation. The mechanism of energy transfer from [WOF] (the sensitizer) to Mn (the activator) is discussed.
采用两步湿化学法成功合成了一种新型红色发光的CsWOF:Mn荧光粉。分别通过粉末X射线衍射（XRD）、透射电子显微镜（TEM）和能量色散X射线光谱（EDS）对其晶体结构、形貌和元素组成进行了确认。在10 - 500 K的温度范围内，通过发射、激发和发光衰减曲线研究了其发光性能。讨论了基于两个耦合的反斯托克斯和斯托克斯边带的荧光强度比（FIR）的CsWOF:Mn非接触光学测温应用。所制备的CsWOF:Mn荧光粉在470 nm蓝光激发下于632 nm处呈现明亮的窄红色发射，在紫外激发下还呈现出宽的黄白色本征钨酸盐发射（~520 nm）。讨论了从[WOF]（敏化剂）到Mn（激活剂）的能量转移机制。
