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LUMINESCENCE OF EU2+-ACTIVATED AND PB2+-ACTIVATED ALKALINE-EARTH OXYHALIDES M4OX6 (M = CA, SR, BA X = CL, BR)
被引:18
|作者:
SCHIPPER, WJ
[1
]
VROON, ZAEP
[1
]
BLASSE, G
[1
]
SCHLEID, T
[1
]
MEYER, G
[1
]
机构:
[1] UNIV HANOVER,INST ANORGAN CHEM,W-3000 HANNOVER,GERMANY
关键词:
D O I:
10.1021/cm00021a035
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The luminescence properties of Ba3.96Eu0.04OCl6, Ba3.96EU0.04OBr6, Sr3.96EU0.04OC16, Sr3.96EU0.04OBr6, Ca3.96Eu0.04OCl6, Eu4OCl6, and Eu4OBr6 are reported and discussed. All compositions show an efficient blue emission under UV and X-ray excitation. From the similarity of the luminescence properties of these materials, it is concluded that the luminescence properties of Eu2+ are strongly determined by the oxide ion in the crystal structure. In Eu4OCl6 and Eu4OBr6 no concentration quenching of the luminescence is observed. The luminescence properties of the alkaline-earth oxyhalides doped with lead are also reported. The Pb2+ ion exhibits a blue emission in the strontium oxyhalides. In addition a red emission of unknown nature is observed.
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页码:688 / 692
页数:5
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