(Y,Gd,Zr)2O3+δ∶Eu粉体和透明陶瓷的制备及其荧光性能研究
Preparation and Fluorescence Properties of(Y,Gd,Zr)2O3+δ∶Eu Nanopowders and Transparent Ceramics
张哲 1任轶 1张舒云 1穆浩洁 1李晓东 1孙旭东2
作者信息
- 1. 东北大学材料科学与工程学院,东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳 110819
- 2. 东北大学材料科学与工程学院,东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳 110819;东北大学佛山研究生院,广东佛山 528311
- 折叠
摘要
本研究针对掺杂Zr元素(5％(摩尔分数))的(Y,Gd,Zr)2O3+δ∶Eu(YGO∶Eu)纳米粉体和真空烧结透明陶瓷,研究Eu3+和Gd3+掺杂含量对粉体发光性能影响,以及Gd3+掺杂含量对透明陶瓷相结构、光学性能和发光性能的影响.结果表明:在Eu3+掺杂含量为5％(原子分数)时,调节Gd3+掺杂含量可进一步改善[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ粉体和陶瓷的性能.当0.25≤y≤0.5时,陶瓷保持立方结构并在y=0.3时实现了最高光学透过率.在激发波长 λex=466 nm 激发 下,[(Y095-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.3)陶瓷的 5D0→7F2 发射强度是[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.25)陶瓷的4.41倍.在监测波长λem=612nm下,[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.3)陶瓷的激发强度(PLE)达到最大值.随着Gd3+含量增加,电荷迁移带(CTB)红移,陶瓷的4f→4f跃迁强度高于CTB强度,并且在396和466 nm处的能级跃迁与近紫外和蓝光LED芯片的发射波长相匹配,表明[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ透明陶瓷可用于白光LED领域.
Abstract
In this study,(Y,Gd,Zr)2O3+δ∶Eu(YGO∶Eu)transparent ceramics were prepared by solid-phase synthesis of powders combined with vacuum sintering.The influence of Eu3+and Gd3+doping content on the phase structure,optical properties,and luminescent properties of powders and ceramics were systematically studied.The results exhibit that when the Eu3+doping content is 5％,the properties of[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.25～0.95)powders and ceramics can be improved by further adjusting the doping amount of Gd3+.The ceramic maintains a cubic structure when the content of Gd3+is 0.25≤y≤0.5 and the highest optical transmittance is achieved at y=0.3.Under the excitation of λex=466 nm,the 5D0→7F2 emission intensity of[(Y0.95-yGdyZr0.05)0.95 Eu0.05]2O3+δ(y=0.3)ceramic intensity is higher than that of[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.25)ceramic.Atλem=612 nm,the PLE(photoluminescence excitation)intensity of the[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.3)ce-ramic reaches the maximum.With the increase of Gd3+content,charge transfer band(CTB)red shifts.The 4f→4f transition intensity of ceramics is higher than that of CTB,and the energy level transition at 396 and 466 nm matches the emission wavelength of near-ultraviolet and blue LED chips,indicating that[(Y0.95-yGdyZr0.05)0.95Eu0.05]2O3+δ(y=0.3)transparent ceramic can be used in the white LED field.
关键词
透明陶瓷/氧化钇/氧化钆/发光性能/烧结助剂Key words
transparent ceramics/yttria/gadolinia/photoluminescent property/sintering additive引用本文复制引用
基金项目
国家重点研发计划项目(2017YFB0310300)
出版年
2024
NETL
NSTL
万方数据