Na^+,Dy^3+,Eu^3+掺杂YAG荧光粉的光学性能  

Optical Properties of Na^+,Dy^3+and Eu^3+Doped YAG Phosphors

作　　者：李晴 王林香[1,2,3] 柏云凤[1,2,3] 阿热帕提·夏克尔 LI Qing;WANG Linxiang;BAI Yunfeng;AREPATI Xiakeer(School of Physics and Engineering,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Novel Luminescent Materials and Nanostructures,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Novel Light Source and Micro/Nano-Optics,Xinjiang Normal University,Urumqi 830054,China)

机构地区：[1]新疆师范大学物理与电子工程学院,乌鲁木齐830054 [2]新疆师范大学,矿物发光及其微结构重点实验室,乌鲁木齐830054 [3]新疆师范大学,新型光源与微纳光学重点实验室,乌鲁木齐830054

出　　处：《人工晶体学报》2021年第1期43-52,共10页Journal of Synthetic Crystals

基　　金：新疆维吾尔自治区自然科学基金(2017D01A60);新疆维吾尔自治区高校科研计划(XJEDU2018Y032);研究生科技创新项目(XSY202002004)。

摘　　要：本文用高温固相法制备了Na^+,Dy^3+,Eu^3+掺杂YAG系列荧光粉。通过改变掺杂的Dy^3+浓度、激发波长、掺杂Na^+,研究其对发光的影响。X射线衍射结果显示,硼酸、Na^+、Dy^3+、Eu^3+掺入基本不影响YAG的立方晶相,且随Na^+、Dy^3+、Eu^3+浓度增加,样品衍射峰位置向小角度偏移。用λem=590 nm监测Dy^3+,15%Eu^3+共掺YAG粉体,随Dy^3+浓度增加,Eu^3+和Dy^3+的激发强度均先增大后减小。当用λex=366 nm激发Dy^3+,15%Eu^3+共掺YAG粉体,此时存在Eu^3+→Dy^3+的能量传递,计算得到Eu^3+→Dy^3+的能量传递效率为84.23%。相比10%Dy^3+,15%Eu^3+共掺YAG,掺入0.5%Na^+后,样品中Dy^3+发光增强1.5倍,色坐标(0.3481,0.397),色温5010 K,接近标准白光。用λex=394 nm激发Dy^3+,15%Eu^3+共掺YAG粉体,此时存在Dy^3+→Eu^3+的能量传递,计算得到Dy^3+→Eu^3+的能量传递效率为88.9%。相比10%Dy^3+,15%Eu^3+共掺YAG,掺入0.5%Na^+后,Eu^3+发光增强1.8倍,色坐标(0.4667,0.4168),色温2650 K,达到商用暖白光标准。The Na^+,Dy^3+,Eu^3+doped YAG series phosphors were prepared by high-temperature solid-phase method.Change the doped Dy^3+concentration,excitation wavelength,and doped Na^+to study its influence on luminescence.X-ray diffraction results show that the doping of boric acid,Na^+,Dy^3+,Eu^3+does not affect the cubic phase of YAG,and with the increase of Na^+,Dy^3+,Eu^3+concentration,the sample diffraction peak position shifts to a small angle.Useλem=590 nm to monitor Dy^3+,15%Eu^3+co-doped YAG powder,with the increase of Dy^3+concentration,the excitation intensity of Eu^3+and Dy^3+both increase first and then decrease.Whenλex=366 nm is used to excite Dy^3+,15%Eu^3+co-doped YAG,at this time,there is an energy transfer of Eu^3+→Dy^3+,the calculated energy transfer efficiency of Eu^3+→Dy^3+is 84.23%.Compared with 10%Dy^3+,15%Eu^3+co-doped YAG,the Dy^3+luminescence in the sample is enhanced by 1.5 times after doping 0.5%Na^+,the color coordinate is(0.3481,0.397),and the color temperature is 5010 K,which is close to standard white light.Whenλex=394 nm is used to excite Dy^3+,15%Eu^3+co-doped YAG,at this time,there is energy transfer from Dy^3+→Eu^3+,the calculated energy transfer efficiency of Dy^3+→Eu^3+is 88.9%.Compared with 10%Dy^3+,15%Eu^3+co-doped YAG,Eu^3+luminescence is enhanced 1.8 times after doping 0.5%Na^+,the color coordinate is(0.4667,0.4168),and the color temperature is 2650 K,which meets the commercial warm white light standard.

关 键 词：Na^+ Dy^3+ Eu^3+掺杂YAG粉体 高温固相法 能量传递 荧光寿命 色坐标 色温 

分 类 号：O611.4[理学—无机化学] O614.33[理学—化学]