摘要
为了研究稀土掺杂单一基质白光荧光粉,以三聚氰胺为原料,通过热分解法制备g-C_(3)N_(4)蓝色荧光粉;采用化学共沉淀法制备了KYF:E(KY0.85F4:0.15Eu^(3+))红色荧光粉,运用沉淀吸附反应制备复合荧光粉KYF:E-CN(KY0.85F4:0.15Eu^(3+)@0.014g-C_(3)N_(4))。利用X射线衍射、红外光谱、荧光光谱分析对荧光粉进行表征。探究了Eu^(3+)和g-C_(3)N_(4)用量对荧光粉发光性能的影响。结果表明,KYF:E和KYF:E-CN的XRD衍射峰与NaYF4标准卡PDF#06-0342的衍射峰基本相匹配,为面心立方晶系结构。KYF:E-CN的红外光谱显示KYF:E和g-C_(3)N_(4)的特征吸收峰,说明g-C_(3)N_(4)已经掺入KYF:E的晶格中。在393 nm的紫外光激发下,Eu^(3+)用量为15%时,红色荧光粉KYF:E的发光强度最大。改变g-C_(3)N_(4)的用量,KYF:E-CN复合荧光粉的发光可实现由红光到蓝光的转变,在g-C_(3)N_(4)用量为1.4%时,KYF:E-CN荧光粉色坐标为(0.27,0.23),发光接近白光,在白光LED中具有潜在的应用前景。
In order to obtain a single matrix white light phosphor,taking melamine as raw material,g-C_(3)N_(4)blue phosphor was prepared by thermal decomposition method.KYF:E(KYF4:0.15Eu^(3+))red phosphor was prepared by using the chemical coprecipitation metod,the composite phosphorKYF:E-CN(KYF4:0.15Eu^(3+)@0.014g-C_(3)N_(4))was prepared by precipitation adsorption reaction.The phosphors werecharacterized by the powder X-ray diffraction(XRD),infrared spectrum(IR),fluorescence spectrum analysis.The effects of Eu^(3+),g-C_(3)N_(4)on luminescence properties of phosphors were investigated.The XRD diffraction peak ofKYF:E andKYF:E-CNmatched that of NaYF4 standard card PDF#06-0342,it was a square crystal structure.IR spectra of KYF:E-CNshowed the characteristic absorption peaks of KYF:E and g-C_(3)N_(4),indicating that g-C_(3)N_(4)was successfully doped inKYF:Efluorescence samples.Under the excitation of UV at 393 nm,when Eu^(3+)dosage was15%,thered phorphorKYF:Ehad the highest luminous intensity.Changing the dosage of g-C_(3)N_(4),the composite phosphors ofKYF:E-CNwere transformed from red light to blue light.When the dosageof g-C_(3)N_(4)was1.4%,the chromaticity coordinates of phosphor of KYF:E-CNwere(0.27,0.23),the luminescence was close to white light,having a potential application in white LED.
作者
刘晓凤
姚鹏飞
何伟清
隆金桥
崔连胜
LIU Xiao-feng;YAO Peng-fei;HE Wei-qing;LONG Jin-qiao;CUI Lian-sheng(Guangxi Key Laboratory of Urban Water Environment,College of Chemistry and Environmental Engineering,Baise University,Baise Guangxi 533000,China)
出处
《当代化工》
CAS
2023年第11期2566-2570,共5页
Contemporary Chemical Industry
基金
广西自然科学基金面上项目,宽带高效激发g-C3N4,Eu3+共掺钼酸锌红色荧光粉的合成、性能及发光增强机制研究(项目编号:2020GXNSFAA159036)
广西自然科学基金联合资助培育项目,簇基配位超分子构筑基元的“融合式”再组装过程和磁-构响应研究(项目编号:2018GXNSFAA294060)。
关键词
白光
合成
发光性能
White light
Synthesis
Luminous performance
作者简介
刘晓凤(1988-),女,山东省烟台市人,博士,讲师,研究方向:有机光电材料的设计与合成。E-mail:516972165@qq.com。;通信作者:隆金桥(1970-),男,壮族,广西自治区靖西市人,教授,研究方向:无功能机材料的合成及性能。E-mail:416874679@qq.com。;通信作者:崔连胜(1980-),山东省临沂市人,副教授,博士,研究方向:金属有机配位聚合物的合成与应用。E-mail:409269722@qq.com。
