双钙钛矿钨酸盐荧光粉的递进式荧光增强及植物LED应用  

Application in plant LED and progressive luminescence enhancement of double perovskite tungstate phosphor

作　　者：武亚奇 何恩节 WU Yaqi;HE Enjie(School of Mechanical Engineering,Anhui Science and Technology University,Chuzhou Anhui 233100;College of Information and Network Engineering,Anhui Science and Technology University,Bengbu Anhui 233030;School of Electrical and Electronic Engineering,Anhui Science and Technology University,Bengbu Anhui 233030)

机构地区：[1]安徽科技学院机械工程学院,安徽滁州233100 [2]安徽科技学院信息与网络工程学院,安徽蚌埠233030 [3]安徽科技学院电气与电子工程学院,安徽蚌埠233030

出　　处：《宁夏师范学院学报》2023年第10期52-59,共8页Journal of Ningxia Normal University

基　　金：安徽高校自然科学研究重大项目(KJ2021ZD0109);2021年安徽科技学院学术和技术带头人后备人选项目(校人[2021]77号)。

摘　　要：利用高温固相法制备了3类Mn^(4+)掺杂的双钙钛矿钨酸盐荧光粉SrMg_(2)La_(2)W_(2)O_(12):xMn^(4+)(SMLW:xMn^(4+))、CaMg_(2)La_(2)W_(2)O_(12):yMn^(4+)(CMLW:yMn^(4+))和CaMg_(2)La_(2)W_(2)O_(12):0.9%Mn^(4+),zNd^(3+)(CMLW:0.90%Mn^(4+),zNd^(3+)).通过XRD、SEM、频域和时域光谱等手段研究了荧光粉的晶体结构、形貌与发光性能.结果表明,当从SMLW:xMn^(4+)到CMLW:yMn^(4+),再到CMLW:0.90%Mn^(4+),zNd^(3+)激发荧光粉时观测到递进式荧光增强,增强的原因主要是由阳离子取代和共掺杂诱导的基质晶格刚性变化引起的.利用最优化荧光粉CMLW:0.90%Mn^(4+)、0.60%Nd^(3+)和365 nm紫光芯片封装的深红色LED在室内植物照明领域具备较好的应用前景.Three kinds of Mn^(4+) doped phosphors including SrMg_2La_2W_2O_(12):xMn^(4+)(SMLW:xMn^(4+)),CaMg_2La_2W_2O_(12):yMn^(4+)(CMLW:yMn^(4+)) and CaMg_2La_2W_2O_(12):0.9%Mn^(4+),zNd^(3+)(CMLW:0.90%Mn^(4+),zNd^(3+)) were prepared by high temperature solid phase approach.The crystal structures,morphologies and luminescent properties were explored by XRD,SEM,frequency-domain spectroscopy and time-domain spectroscopy,respectively.It was shown that the progressive luminescence enhancement was observed when the excited phosphor was changed from SMLW:xMn^(4+) to CMLW:yMn^(4+) then to CMLW:0.90%Mn^(4+),zNd^(3+).The enhancement was mainly caused by the variation of lattice rigidity originated from the cation substitution and codoping.The well-packaged deep-red LED with the optimal CMLW:0.90%Mn^(4+),0.60%Nd^(3+) phosphor and a 365 nm violet chip exhibited a promising prospect in indoor plant illumination.

关 键 词：高温固相 双钙钛矿 发光增强 LED封装 

分 类 号：O482.31[理学—固体物理]