Ba3-xB6Si2O16:xSm3+发光材料的制备及其性能表征
Performance characterization and properties of Ba3-xB6Si2O16:xSm3+ luminescent materials
曾帆 1茹晶晶 2赵兵 3施佳文 4钟彤晖4
作者信息
- 1. 福建师范大学 环境与资源学院、碳中和现代产业学院,福建 福州 350315;宁德师范学院 新能源与材料学院,福建 宁德 352100
- 2. 宁德师范学院 新能源与材料学院,福建 宁德 352100;宁德师范学院 绿色能源与环境催化福建省高校重点实验室,福建 宁德 352100
- 3. 宁德师范学院 机电工程学院,福建 宁德 352100
- 4. 宁德师范学院 新能源与材料学院,福建 宁德 352100
- 折叠
摘要
采用高温固相法制备Ba3B6Si2O16∶Sm3+系列发光材料的荧光粉样品,对其进行粉末X射线衍射、荧光光谱、固体紫外-可见漫反射等相关性能的研究与表征,探讨不同的Sm3+离子浓度对Ba3-xB6Si2O16荧光粉发光性能的影响,并对其浓度猝灭机理进行讨论.实验表明,在405 nm近紫外光激发下,Ba3-xB6Si2O16∶x Sm3+系列发光材料能够同时发射出571 nm(黄光)和606 nm(橙光)荧光,分别对应于Sm3+离子的 4G5/2→6H5/2和 4G5/2→6H7/2能级跃迁.当x = 0.21时,Ba2.79B6Si2O16∶0.21Sm3+荧光粉发光性能最强;继续增加掺杂Sm3+离子的浓度,则出现浓度猝灭现象.其浓度猝灭机制可以通过相邻Sm3+离子之间的相互作用来解释.所制备的Ba3B6Si2O16∶Sm3+荧光粉可被近紫外光有效激发,在白光LED领域具有潜在的应用前景.
Abstract
A series of Ba3B6Si2O1∶6 Sm3+ phosphors were prepared by high temperature solid phase method.The X-ray diffractometer(XRD),Photoluminescence(PL),UV-Vis DRS and other related properties of these samples were studied and characterized.The influence of Sm3+ ion concentration on the luminescence properties was also discussed.Experimental results show that Ba3-xB6Si2O1∶6 x Sm3+ samples can simultaneously emit 571 nm(yellow light)and 606 nm(orange light)fluorescence under 405 nm near-ultraviolet light excitation,correspond-ing to Sm3+ ion 4G5/2→6H5/2 and 4G5/2→6H7/2 energy level transitions.When x = 0.21,Ba0.79B6Si2O1∶6 0.21Sm3+ phos-phor exhibits the strongest luminescence performance.Then the concentration of Sm3+ions was increased,and the concentration quenching phenomenon appeared.The concentration quenching mechanism can be explained by the interaction between adjacent Sm3+ ions.The prepared phosphor Ba3B6Si2O1∶6 Sm3+ can be effectively ex-cited by near ultraviolet light,which has a potential application prospect in the field of white LED.
关键词
Sm3+掺杂红色发光材料/稀土离子/发光材料/淬灭机制Key words
Sm3+doped red luminescent material/rare earth ion/luminescent materials/quenching mechanism引用本文复制引用
基金项目
福建省中青年教师教育科研项目(JAT210469)
福建省自然科学基金(2021J011149)
宁德师范学院青年专项项目(2021Q106)
出版年
2024
NETL
NSTL
万方数据