Effect of Zn2+ dopant on photon avalanche upconversion behavior of BiOCl:Er3+ crystals
来源期刊：JOURNAL OF RARE EARTHS2015年第10期
论文作者：刘群 李永进 宋志国 万荣华 周玉婷 邱建备 杨正文 尹兆益
文章页码：1098 - 1103
摘 要：Effect of divalent dopants, Zn2+ ion, on the high-order photon avalanche（PA） upconversion（UC） emission of Er3+ doped Bi OCl 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 Bi OCl:Er3+, but would improve the emission intensity when used as lattice modifier.
刘群1，李永进2，宋志国1，万荣华1，周玉婷1，邱建备1，杨正文1，尹兆益1
1. School of Materials Science and Engineering, Kunming University of Science and Technology2. Department of Science Research, Yunnan Technology and Business University
摘 要：Effect of divalent dopants, Zn2+ ion, on the high-order photon avalanche（PA） upconversion（UC） emission of Er3+ doped Bi OCl 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 Bi OCl:Er3+, but would improve the emission intensity when used as lattice modifier.
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