Effect of Zn2＋ dopant on photon avalanche upconversion behavior of BiOCI：Er3＋ crystals

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 su...

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Published in:中国稀土学报：英文版 2015, Vol.33 (10), p.1098-1103
Main Author: 刘群 李永进 宋志国 万荣华 周玉婷 邱建备 杨正文 尹兆益
Format: Article
Language:English
Subjects:
Er3
上转换
光子雪崩
发射强度
掺杂效应
掺杂浓度
离子晶体
行为
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Summary: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 BiOCI：Er3＋, but would improve the emission intensity when used as lattice modifier.
ISSN:1002-0721
2509-4963