| Na2SrSiO4：Ce^3＋,Tb^3＋,Yb^3＋的制备及近红外量子剪裁发光性质 |
| |
| 引用本文： | 刘关喜,孟建新.Na2SrSiO4：Ce^3＋,Tb^3＋,Yb^3＋的制备及近红外量子剪裁发光性质[J].光谱实验室,2011(5):2179-2182. |
| |
| 作者姓名： | 刘关喜 孟建新 |
| |
| 作者单位： | 暨南大学化学系;暨南大学纳米化学研究所; |
| |
| 基金项目： | 国家自然科学基金(No.30670523)资助项目; 中央高校基本科研业务费专项资金资助项目 |
| |
| 摘 要： | 采用高温固相法制备了新型N a2SrS iO4：C e3＋,Tb3＋,Yb3＋的近红外发光材料。对样品可见和近红外激发光谱、发射光谱及荧光寿命的研究表明,N a2SrS iO4：C e3＋,Tb3＋,Yb3＋中存在高效的Tb3＋→Yb3＋的量子剪裁下转换效应,下转换量子效率约为182.4%。Ce3＋的共掺大大提高了样品的紫外光吸收,显著敏化了样品的近红外发光效率。研究了Ce3＋,Tb3＋和Yb3＋掺入量对其发光性质的影响。结果表明,当Ce3＋的浓度为2%,Tb3＋的浓度为13%和Y b3＋的浓度为16%时,样品的近红外发光最强。
|
| 关 键 词： | 量子剪裁 近红外发光 Na2SrSiO4 Yb3＋ |
Preparation and Near-Infrared Quantum Cutting Luminescent Properties of Na_2SrSiO_4:Ce~(3+),Tb~(3+),Yb~(3+) Phosphor |
| |
| LIU Guan-Xi MENG Jian-Xinaa.Preparation and Near-Infrared Quantum Cutting Luminescent Properties of Na_2SrSiO_4:Ce~(3+),Tb~(3+),Yb~(3+) Phosphor[J].Chinese Journal of Spectroscopy Laboratory,2011(5):2179-2182. |
| |
| Authors: | LIU Guan-Xi MENG Jian-Xinaa |
| |
| Institution: | LIU Guan-Xi MENG Jian-Xina(Department of Chemistry,Jinan University,Guangzhou 510632,P.R.China)a(Institute of Nano-Chemistry,P.R.China) |
| |
| Abstract: | Novel Na2SrSiO4：Ce3＋,Tb3＋,Yb3＋ Phosphors were synthesized by high temperature solid state method.The visible and near-infrared excitation spectrum and emission spectrum as well as fluorescence decay curves were determined.Highly efficient down conversion efficiency of quantum-cutting in Tb3＋→Yb3＋ was confirmed in Na2SrSiO4：Ce3＋,Tb3＋,Yb3＋ Phosphors,and the down conversion efficiency was measured to be 182.4%.The results indicated that absorption of UV light remarkably increased after addition of Ce3＋,and the near infrared fluorescence intensity can be greatly sensitized.The effect of doping concentrations of RE3＋（RE=Ce,Yb,Tb） on luminescent properties was investigated.When doping concentration of 2% for Ce3＋,13% for Tb3＋ and 16% for Yb3＋,near infrared luminescence was strongest. |
| |
| Keywords: | Quantum Cutting Near-Infrared Luminescent Na2SrSiO4 Yb3 |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
