|
|||||
|
|
| Eu3+掺杂LiNbO3晶体的变温发射光谱特征 | |
| 引用本文： | 夏海平,宋宏伟,王金浩,章践立,王铁,张约品. Eu3+掺杂LiNbO3晶体的变温发射光谱特征[J]. 光谱学与光谱分析, 2005, 25(1): 104-107 |
| 作者姓名： | 夏海平 宋宏伟 王金浩 章践立 王铁 张约品 |
| 作者单位： | 1. 宁波大学光电子功能材料重点实验室,浙江,宁波,315211 2. 中国科学院长春光学精密机械与物理研究所,吉林,长春,130021 |
| 基金项目： | 浙江省科技厅(011066)和宁波市博士基金(02J20101-12)资助项目 |
| 摘 要： | 在488nFn波长光的激发下，研究了用坩埚下降法生长的掺杂Eu^3 离子的下部与上部LiNbO3晶体从77到600K的变温发射光谱特征。实验结果表明，对于生长后期的上部晶体，随着温度的升高，其发光强度总体增强；然而对于生长初期的下部晶体，随着温度的升高，其发光强度首先增强，到540K时达最大值，然后随着温度的升高，其发光强度反而下降。用热激活效应、声子辅助吸收效应与热猝灭效应解释了晶体上部与下部的发光特征。 |
| 关 键 词： | LiNbO3晶体 Eu^3＋ 猝灭 发光特征 坩埚下降法 发射光谱 发光强度 升高 灭效 辅助 |
| 文章编号： | 1000-0593(2005)01-0104-04 |
| 修稿时间： | 2003-12-28 |
Temperature-Dependence Emission Properties of Eu3+-Doped in LiNbO3 Single Crystal |
|
| XIA Hai-ping,SONG Hong-wei,WANG Jin-hao,ZHANG Jian-li,WANG Tie,ZHANG Yue-pin. Temperature-Dependence Emission Properties of Eu3+-Doped in LiNbO3 Single Crystal[J]. Spectroscopy and Spectral Analysis, 2005, 25(1): 104-107 | |
| Authors: | XIA Hai-ping SONG Hong-wei WANG Jin-hao ZHANG Jian-li WANG Tie ZHANG Yue-pin |
| Affiliation: | Laboratory of Photo-electronic Materials, Ningbo University, Ningbo 315211, China. |
| Abstract: | The temperature-dependence emission spectra of lower and upper part of Eu~3+ -doped LiNbO_3 crystals from 77 to 600 K were investigated under the excitation of a 488 nm light. The results show that, for upper part of crystal, the fluorescence intensity of Eu~3+ ions increases with the temperature increase, however, for lower part, the intensity first increases with the temperature increase, and then decreases obviously with temperature increase. The variations of fluorescence intensity for lower and upper part of crystals are explained. The emission intensity of Eu~3+ ions in LN is the total effect of thermally excited emission, phonon-assistant absorption and temperature-quenching effect. |
| Keywords: | LiNbO_3 crystal Thermal activation Phonon-assistant absorption Non-radiating energy transformation Temperature quenching |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |