摘要
采用高温固相反应法,在Ar气氛中,合成了K_2NaAlF_6和KAlF_4基质化合物.分别测定了它们的结构,并计算了晶胞参数.测定了K_2NaAlF_6:Ce^(3+)和KAlF_4:Ce^(3+)磷光体的激发光谱和荧光光谱,根据Ce^(3+)的光谱结构的特点,讨论了Ce^(3+)的取代格位.
K2NaAlF6:Ce3 + and KAlF4:Ce3 + phosphors were synthesized by solid state reaction method at Ar atmosphere. Their structures have been determined and the structure parameters calculated. K2NaA1F6: Ce3 + belongs to cubic system, space group Fm3mm, aaaaaaaa = 0.8112nm. KAlF4:Ce3 + belongs to tetragonal system, space group P4/mmm aaaaaaaaa = 0.3556nm, c = 0.6147nm. The. spectra of K2NaAlF6 =Ce3+ and KAlF:Ce3+ were .measured. According to the characteristic of spectral structure the replaced sites of Ce3+ are discussed. Probably Ce3+ ions replace M+ lattice sites.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1991年第3期224-229,共6页
Chinese Journal of Luminescence
基金
国家自然科学基金
