Gd2O2S:Eu荧光谱及能级的高压研究

High Pressure Investigation of Fluorescence Spectra and Levels for Gd2O2S:Eu

1.
State Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China;
2.
Changchun Institute of Physics, Academia Sinica, Changchun 130021, China;
3.
Physics Department of Harbin Normal University, Harbin 150080, China

摘要: 在21 500~11 500 cm-1光谱区间内测量了Gd2O2S:Eu的荧光光谱，测量是在室温和液氮条件下进行的，对122条低温谱线和96条常温谱线进行了指认。识别了Eu3+离子5D0~2及7F0~6的39个斯塔克能级中的35个能级。在0~15 GPa压力范围内，研究了Gd2O2S:Eu高压下的发射光谱。在压力作用下，发现所有观测到的谱线都红移，强度降低。6个5D0~2能级下降速度大于7FJ，5D2、7F2~5多重态的斯塔克劈裂变大，而5D1和7F1的劈裂变小。
- Gd2O2S:Eu /
- 发射光谱 /
- 压力研究
Abstract: The fluorescence spectrum of Eu3+ doped in Gd2O2S has been investigated in the spectral region 21 500～11 500 cm-1 at 77 K and 300 K. The 122 spectral lines measured at 77 K and the 96 lines at 300K have been assigned. Thirty five of the thirty nine Stark levels of 5D0~2, 7F0~6 multiplets were identified. The emission spectra were also measured under high pressures up to 15 GPa. It was found that all the lines observed change to longer wavelength and their intensities decrease with increasing pressure. The six levels of 5D0~2 descent more rapidly than the levels of 7FJ. The stark splittings of 5D2 and 7F2~5 multiplets increase, but the splittings of 5D1 and 7F1 multiplets decrease under pressure.
- Gd2O2S:Eu /
- fluotescence spectrum /
- high pressure study