共掺杂的二氧化锆纳米材料中Yb^(3+)和Tm^(3+)上转换发光  

Up-conversion Luminescence in Nanocrystalline Zirconia Co-doped with Yb^(3+) and Tm^(3+) Ions

作　　者：刘晃清[1] 秦冠仕[1] 林海燕[1] 吴长锋[1] 秦伟平[1] 张继森[1] 赵丹[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,中国科学院激发态开放实验室,吉林长春130022

出　　处：《光谱学与光谱分析》2004年第1期9-11,共3页Spectroscopy and Spectral Analysis

基　　金：国家重点基础研究发展规划 (973稀土;G1 9980 61 30 9);国家自然科学基金 (1 0 2 740 82 )资助项目

摘　　要：用共沉淀法制备了二氧化锆掺Yb3+ 和 0 2 (0 4 ,1)mol%Tm3+ 的纳米材料 ;用发射波长为 980nm的激光激发样品 ,测量了掺 0 2mol%Tm3+ 的纳米材料在不同退火温度下的上转换光谱 ;测量了在相同退火温度、不同泵浦电流下的上转换发射光谱 ;并研究了蓝色上转换发射的过程。Nanocrystalline zirconia co-doped with Yb 3+ and Tm 3+ ions was prepared by co-precipitation. Up-conversion luminescence of the samples doped with different Tm 3+ concentrations was investigated under a 980 nm LD excitation. When x=0.2 and 0.4, the luminescences of the two samples were mostly the same: strong blue up-conversion peaked at 474 nm and very weak red up-conversion were observed, corresponding to the transitions of 1G 4→ 3H 6 and 1G 4→ 3F 4 respectively. However, there was no luminescence of x=1. Blue up-conversion luminescence of 0.2 mol% Tm 3+-ions-doped nanocrystalline zirconia under different annealing temperatures was investigated. Blue up-conversion emission grew stronger with annealing temperature increasing. With pumping current increasing, blue up-conversion emission grew stronger too. By studying the sources of blue up-conversion, we concluded that it was three-photon process.

关 键 词：共掺杂 二氧化锆纳米材料 镱离子 铥离子 上转换发光 稀土离子 上转换器件 

分 类 号：O482.31[理学—固体物理] TN244[理学—物理]