| CaAl12O19基质中Eu2+-Cr3+的能量传递与发光性质 |
| |
| 引用本文： | 杨志平,周东站,杨艳民,孙明生. CaAl12O19基质中Eu2+-Cr3+的能量传递与发光性质[J]. 中国稀土学报, 2011, 29(1) |
| |
| 作者姓名： | 杨志平 周东站 杨艳民 孙明生 |
| |
| 作者单位： | 1. 河北大学物理科学与技术学院,河北,保定,071002
2. 河北大学工商学院,河北,保定,071002 |
| |
| 基金项目： | 河北科学技术发展基金，河北大学自然基金 |
| |
| 摘 要： | 在还原气氛下高温固相法合成了CaAl12O19:Eu2+,Cr3+荧光粉.样品光谱显示:Eu2+发射带与Cr3+吸收带有重叠,具备Eu2+-Cr3+之间发生能量传递必要条件.在290 nm近紫外光激发下,单掺杂Eu2+和Cr3+时样品均无691 nm发射,仅在Eu2+,Cr3+共掺时才出现691 nm发射,这证明Eu2+和Cr3+之间发生了能量传递,且监测691 nm时样品的激发光谱也证实了这一点.CaAl12O19:1%Eu2+,x%Cr3+样品组的发射光谱研究表明:增大x能提高Cr3+红光与Eu2+蓝紫光发射强度之比及Eu2+-Cr3+之间能量传递效率.CaAl12O19:2%Cr3+,x%Eu2+样品组的激发光谱分析表明:x>2时,Cr3+在415 nm处的吸收效率相对于565 nm有显著提高.还对样品CaAl12O19:1%Eu2+,1%Cr3+荧光寿命和能量传递速率进行了简单分析.
|
| 关 键 词： | 能量传递 吸收效率 稀土 |
Red Photoluminescence and Energy Transfer from Eu2+ to Cr3+ in CaAl12O19 |
| |
| Yang Zhiping,Zhou Dongzhan,Yang Yanmin,Sun Mingsheng. Red Photoluminescence and Energy Transfer from Eu2+ to Cr3+ in CaAl12O19[J]. Journal of the Chinese Society of Rare Earths, 2011, 29(1) |
| |
| Authors: | Yang Zhiping Zhou Dongzhan Yang Yanmin Sun Mingsheng |
| |
| Affiliation: | Yang Zhiping1,Zhou Dongzhan1,Yang Yanmin1,Sun Mingsheng2(1.College of Physics Science & Technology,Hebei University,Baoding 071002,China,2.Industrial & Commercial College,China) |
| |
| Abstract: | The CaAl12O19:Eu2+,Cr3+ phosphors were synthesized by high-temperature solid-state reaction under reducing atmosphere.It was observed that the absorption band of CaAl12O19:Cr3+ overlaped the emission one of CaAl12O19:Eu2+ to a certain extent from the sample spectra,and it satisfied the necessary condition of energy transfer between Eu2+ and Cr3+.There was light emission at 691nm in samples co-doped with Eu2+ and Cr3+ under excitation 290 nm,but not such emission in single-doped samples with Eu2+ or Cr3+.It ... |
| |
| Keywords: | CaAl12O19:Eu2+ Cr3+ |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
