高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

镱离子敏化与温度对铒离子掺杂碲酸盐玻璃上转换光谱的影响

洪 俊1,2, 聂秋华1,2, 戴世勋1,2, 徐铁峰1,2, 沈 祥1,2, 章向华2,3   

  1. 1. 宁波大学信息科学与工程学院, 宁波 315211; 2. 宁波市新型功能材料及其制备科学实验室, 省部共建国家重点实验室培育基地, 宁波 315211; 3. Université de Rennes I, Rennes, France 35042
  • 收稿日期:2007-11-13 修回日期:2008-01-23 出版日期:2008-09-20 网络出版日期:2008-09-20

Effects of Temperature and Ytterbium Sensitizing on Upconversion Characteristics in Erbium-doped Tellurite Glasses

HONG Jun1,2, NIE Qiu-Hua1,2, DAI Shi-Xun1,2, XU Tie-Feng1,2, SHEN Xiang1,2, ZHANG Xiang-Hua2,3   

  1. 1. Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211, China; 2. The State Key Laboratory Base of Novel Functional Materials and Preparation Science, Ningbo 315211, China; 3. Université de Rennes I, Rennes, France 35042
  • Received:2007-11-13 Revised:2008-01-23 Published:2008-09-20 Online:2008-09-20

PDF (PC)

1721

被引次数

1

摘要： 用熔融-淬冷法制备了玻璃样品系列75TeO2-20ZnO-(4.6-x)La2O3-0.4Er2O3-xYb2O3 (x=0, 0.4, 0.8, 2.0, 3.2, 4.0), 研究了镱离子的掺入及温度的变化对该玻璃系统上转化光谱的影响, 结果表明: 在常温下, 当Yb3+离子浓度达到2mol%时, 上转换红光和545nm绿光都达到了最大值, 此时545nm绿光强度是未掺Yb3+时的6倍左右, 红光强度为未掺Yb3+时的4倍左右; 当温度在8～300K变化时, 530nm绿光强度随着温度的升高而增大, 545nm绿光与657nm红光强度随着温度的升高首先增大, 在80K达到最大值, 然后随着温度的升高而下降. 通过速率方程, 分析了镱离子的敏化及温度对该玻璃系统上转换光谱的影响.

关键词: 碲酸盐玻璃, 上转换, 速率方程

Abstract: Tellurite glasses 75TeO2-20ZnO-(4.6-x)La2O3-0.4Er2O3-xYb2O3 (x=0, 0.4, 0.8, 2.0, 3.2, 4.0) were prepared by conventional melt-quenching method. The effects of temperature (8-300K) and the ytterbium concentration on upconversion characteristics were investigated. When the Yb3+ concentration is 2mol%, the upconversion emission intensities around 545nm and 657nm present 6-fold and 4-fold enhancement, respectively, compared with Er3+-doped glass at room temperature. The green emission intensities around 530nm present monotonic increase with increasing temperature from 8K to 300K. The green emission intensities around 545nm increase with increasing temperature from 8K to 80K and reach the maximum at around 80K, then decrease with increasing temperature from 80K to 300K. The characteristics of the red emission intensity around 657nm are similar to the green emission intensity around 545nm. The effects of temperature and concentration of ytterbium on upconversion characteristics are analyzed by rate equations in details, which match well with the experiment results.

Key words: tellurite glasses, upconversion, rate equation

中图分类号: