稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
Journal of Rare Earths
2015年
10期
1098-1103
,共6页
刘群%李永进%宋志国%万荣华%周玉婷%邱建备%杨正文%尹兆益
劉群%李永進%宋誌國%萬榮華%週玉婷%邱建備%楊正文%尹兆益
류군%리영진%송지국%만영화%주옥정%구건비%양정문%윤조익
BiOCl:Er3+ crystal%Zn2+ doped%upconversion%photon avalanche%rare earths
Effect of divalent dopants, Zn2+ ion, on the high-order photon avalanche (PA) upconversion (UC) emission of Er3+ doped BiOCl microcrystals was investigated. XRD results indicated that Zn2+ ion dopants would mostly enter into the lattice space at low and moderate doping concentration, and began to substitute Bi3+ ion gradually at heavily doping level. Under exaction at 980 nm, the PA UC of violet, green and red emission of Er3+ ions could be observed, and the UC emission intensity increased with increasing the Zn2+ addition below 8 mol.%, then decreased with further addition. Power dependence study showed that the dopant concentration of Zn2+ had no obviously negative effect on the occurrence of PA emission. On the bases of results investigated herein, we considered that the lattice distortion by Zn2+ doping could not directly change the special PA emission of BiOCl:Er3+, but would improve the emission intensity when used as lattice modifier.
