文献类型：期刊文献

中文题名：Bi^(3+)/Eu^(3+)共掺Y_(2)MgTiO_(6)荧光粉的发光性能研究

英文题名：Luminescence properties of Bi 3+/Eu3+co-doped Y2MgTiO6phosphors

作者：刘昊[1];熊正烨[1];王晓淳[1];梁苑婷[2];李晓意[1];郭竞渊[1]

机构：[1]广东海洋大学电子与信息工程学院,湛江524088;[2]广东海洋大学化学与环境学院,湛江524088

年份：2023

卷号：51

期号：S01

起止页码：89

中文期刊名：化工新型材料

外文期刊名：New Chemical Materials

收录：CSCD_E2023_2024、北大核心、CSCD、北大核心2020

基金：广东省科技计划(2015A020216020);大学生创新创业训练计划(S202010566059);广东海洋大学科研项目(060302112102)

语种：中文

中文关键词：高温固相法;光致发光;X射线激发荧光;红色荧光粉

外文关键词：high-temperature solid-state method;photoluminescence;X-ray excited luminescence;red phosphors

中文摘要：采用高温固相法合成了Bi^(3+)和Eu^(3+)共掺的Y_(2)MgTiO_(6)荧光粉,X射线衍射谱(XRD)分析表明,所有样品的晶体结构均为单斜晶系P21/n,Bi^(3+)和Eu^(3+)掺入Y_(2)MgTiO_(6)中并替代Y^(3+)的位置。通过光致发光光谱、X射线激发荧光谱(XEL)系统研究了Bi^(3+)和Eu^(3+)掺杂浓度与发光强度之间的关系。荧光分析表明,Y_(2)MgTiO_(6)∶Bi^(3+),Eu^(3+)荧光粉可被271nm左右的近紫外光激发,在620nm处表现出较强的红光发射带,这一发光属于Eu^(3+)的^(5)D_(0)→^(7)F_(2)特征跃迁;当Eu^(3+)掺杂量为20%(摩尔分数)时发光最强,且适量Bi^(3+)掺杂会使Eu^(3+)的特征发射增强。X射线激发荧光谱测试结果表明该样品可被X射线有效激发,并表现为Eu^(3+)的特征发射;在660K左右的高温环境下Eu^(3+)的红光发射更强,在紫外光和X射线激发下,Bi^(3+)均可以有效地敏化Eu^(3+)发光。CIE色坐标表明Y_(2)MgTiO_(6)∶Bi^(3+),Eu^(3+)样品是高色纯度(99.67%)的红色荧光粉。强红光发射以及对X射线的有效吸收均表明该红色荧光粉在照明和X射线闪烁体领域有潜在的应用价值。

外文摘要：Bi^(3+)and Eu^(3+)co-doped Y_(2)MgTiO_(6) phosphors were synthesized by high-temperature solid-state method.X-ray diffraction spectroscopy(XRD)analysis showed that the crystal structures of all samples were monoclinic P21/n,and Bi^(3+)and Eu^(3+)were successfully doped into Y_(2)MgTiO_(6)and replaced the position of Y^(3+).The relationship between the doping concentration of Bi^(3+)and Eu^(3+)and the luminescence intensity was systematically studied by photoluminescence spectroscopy and X-ray excitation fluorescence spectroscopy(XEL).Fluorescence analysis revealed that the Y_(2)MgTiO_(6)∶Bi^(3+),Eu^(3+)phosphors could be excited by near ultraviolet light at about 271nm and presented a strong red emission band at 620nm,which belonged to the ^(5)D_(0)→^(7)F_(2)characteristic transition of Eu^(3+).When the doping amount of Eu^(3+)was 20%(mol fraction),the luminescence was the strongest,and the characteristic emission of Eu^(3+)could be enhanced by an appropriate amount of Bi^(3+)doping.The X-ray excited fluorescence spectrum test results showed that the sample could be effectively excited by X-ray and exhibited the characteristic emission of Eu^(3+).The red emission of Eu^(3+)was stronger at a high temperature of about 660K.Under both ultraviolet and X-ray excitation,Bi^(3+)could effectively sensitize Eu^(3+)luminescence.The CIE color coordinates indicated that the Y_(2)MgTiO_(6)∶Bi^(3+),Eu^(3+)sample was a red phosphor with high color purity(99.67%).The strong red emission and effective absorption of X-ray illustrated that the red phosphor had potential application value in the field of illumination and Xray scintillators.