Spectroscopic Properties of Pb2+-Doped BaF2 Crystals

被引：1
|
作者：
Buse, Gabriel [1 ]
Stef, Marius [2 ]
Nicoara, Irina [2 ]
机构：
[1] West Univ Timisoara WUT, Inst Adv Environm Res, ICAM, Oituz Str,4, Timisoara 300086, Romania
[2] West Univ Timisoara, Fac Phys, 4 Bd V Parvan, Timisoara 300223, Romania
来源：
CRYSTALS | 2023年 / 13卷 / 04期
关键词：
barium fluoride crystal; Pb doping; optical properties; luminescence; OPTICAL-PROPERTIES; PB2+; LUMINESCENCE; ABSORPTION; GROWTH; IONS; LEAD; CENTERS; COEFFICIENT; EMISSION;
D O I：
10.3390/cryst13040659
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Various concentrations of PbF2-doped BaF2 crystals were grown by the Bridgman method using a shaped graphite heater. The room temperature optical absorption spectra showed two UV absorption bands (labeled A and D), characteristic of the Pb2+ ions. The structure of the bands was analyzed using the Gaussian multi-peak fitting. The distribution of the Pb2+ ions along the crystals and the effective segregation coefficient were studied using the optical absorption method. The obtained effective segregation coefficient was >1. The Pb2+ ions were not uniformly distributed along the samples. High intensity emission bands were observed in the near UV domain and the visible region.
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页数：15
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