(1. 昆明理工大學 真空冶金國家工程實驗室，昆明 650093；
2. 昆明理工大學 云南省有色金屬真空冶金重點實驗室，昆明 650093；
3. 昆明理工大學 冶金與能源工程學院，昆明 650093)
摘 要: 采用高溫固相反應法制備出新型紅色長余輝發(fā)光材料Gd2O2S:Eu3+, Xn+(X為Mg、Si、Ti中的一種或兩種)，研究摻雜離子對Gd2O2S:Eu3+磷光體的晶體結(jié)構、形貌粒度和發(fā)光性能的影響。通過X射線粉末衍射(XRD)、掃描電鏡(SEM)和分光光度計等對合成產(chǎn)物進行分析與表征。結(jié)果表明：摻雜離子沒有改變Gd2O2S:Eu3+磷光體的晶體結(jié)構，顆粒的形貌為類球形，分散性良好。同時，摻雜離子顯著地延長發(fā)光材料Gd2O2S:Eu3+的余輝時間，并顯示純正的紅色發(fā)光。
關鍵字: Gd2O2S:Eu3+；磷光體；摻雜離子；光譜
structure and luminescent properties of Gd2O2S:Eu3+ phosphor
（1. National Engineering Laboratory for Vacuum Metallurgy,
Kunming University of Science and Technology, Kunming 650093, China;
2. Yunnan Provincial Key Laboratory of Nonferrous Vacuum Metallurgy,
Kunming University of Science and Technology, Kunming 650093, China;
3. Faculty of Metallurgical and Engineering, Kunming University of Science and Technology, Kunming 650093, China）
Abstract:Gd2O2S:Eu3+, Xn+ (X is Mg, Si or Ti), as a novel red long afterglow phosphor, was synthesized by high- temperature solid-state reaction method. And the effects of the doped ions on the crystal structure, particle size distribution, luminescent properties and afterglow properties of the Gd2O2S:Eu3+ phosphor were studied. The synthesized phosphors were investigated, respectively, by XRD, SEM and fluorescence spectrophotometer. The results show that the doped ions do not change the crystal structure of Gd2O2S:Eu3+, which is hexagonal crystal structure and similar to that of Gd2O2S matrix. The particles of Gd2O2S:Eu3 +, Xn+ (X is Mg, Si or Ti) are basically spherical in shape, with good dispersion. There is red shift of its main excitation peak which is also broadened and strengthened on the excitation spectrum by doping Mg2+, Si4+, Ti4+, etc. And the enhancement of luminescent properties including brightness and long-afterglow property is also confirmed due to incorporations of doped ions.
Key words: Gd2O2S:Eu3 +; phosphor; dopant; spectrum
