摘要
合成了掺Eu^(2+)的单一氟化物五种和复合氟化物六种;研究了Eu^(2+)在基质中的跃迁发射随晶场、化学键性质变化的规律,在一些低配位数、强晶场的体系中观察到了Eu^(2+)的f→F跃迁发射,首次在室温下,观察到单一氟化物AlF_3:Eu^+中的t→f跃迁发射。
Five Eu^(2+)-doped simple fluorides and six Eu^(2+)-doped complex fluorides are synthesized by solid reactions. The strength of the crystal-field at the sites of Eu^(2+) ion, and the degroe of covalenco of Eu—F bond in these hosts are discussed. The f-f transition emission of Eu^(2+) ion is observed in the hosts which has lower coordination number and strong crystal-field. The f-f transition emission of Eu^(2+) ion is observed for the first time in the simple fluoride AlF_3.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1990年第7期648-652,共5页
Acta Chimica Sinica
基金
国家自然科学基金
