摘要
本文在室温下测量了ＧｄＯＢｒ：Ｅｕ的常压和高压荧光谱，光谱范围在１３０００～２１５００ｃｍ－１之间，压力至１２ＧＰａ．常压下，清晰可辨的荧光谱线共有４３条，这些谱线由Ｅｕ３＋４ｆ６组态内５Ｄ０－２至７Ｆ０－５的跃迁产生．由荧光谱线得到２６个晶场能级（Ｓｔａｒｋ能级）．谱线绝大部分随压力红移，少数几条谱线随压力先蓝移后红移．所有谱线的强度随压力升高而减弱．７Ｆ０－５的能级随压力的变化规律比较复杂，而５Ｄ０－５各能级均随压力的升高几乎线性地降低．
he fluorescence spectra of GdOBr:Eu were measured and analyzed at room temperature and under high pressure up to 12GPa.43 lines were observed at ambient pressure in the wavenumber of 13000￣21500cm-1.These lines can be attributed to 5D0-2→7F0-5 transitions of the 4f6 configuration for GdOBr:Eu.Most of these lines shift to the red with increasing pressure.There are few lines which firstly shift to the blue and thento the red.All these lines become increasingly weaker with increasing pressure.From the fluorescence spectra,26 Stark levels were determined. Under pressures,the 5D0-2Stark levels shift downwards,but the 7F0-5,Stark levels shift upwards or downwards irregually.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1995年第4期298-305,共8页
Chinese Journal of Luminescence
关键词
高压
荧光谱
晶场能级
钆氧溴
铕
掺杂
GdOBr:Eu,high pressure,fluorescence spectrum,crystal field level
