摘要
采用高温固相反应法，合成了CaAl2B2O7：Eu磷光体。测定了CaAl2B2O7：Eu的振动光谱，结果表明BO3的振动吸收位于1400～1600cm(－1)区域内，AlO6的吸收位于519cm-1。研究了CaAl2B2O7：Eu中Eu(3+)的光谱特性，发现两个不同的Eu(3+)的发光中心。声子伴带研究表明BO3出现在Eu(3+)的周围。
CaAl2B2O7: Eu was synthesized by solid reaction. The vibrational spectrum of theCaA12B2O7: Eu was investigated. It is showed that the vibration absorptions of the BO3 groupsare present in the 1400 ~ 600 cm- I region, and the bands peaking at 519 cm- 1 originates fromthe AlO6 vibration probably. The luminescent properties of Eu3 + in CaA12B2O7 were investigated. It is found that the Eu3+ in CaA12BZO7 occupies two different sites. Investigation on thephonon sideband of Eu3+ indicates that BO3 groups are present in the surroundings of Eu3+.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1999年第1期12-15,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金!59572004
