李素文;林君;任慧娟;程子泳;李国岗;彭冲;

• 1:长春工程学院理学院
• 2:长春应用化学研究所稀土资源利用国家重点实验室

摘要(Abstract)：

采用简单的水热方法制备了一系列Ce3+-Yb3+共掺的CaF2纳米粒子。XRD测试结果表明,Ce3+和Yb3+不同掺杂浓度下的CaF2纳米粒子结晶良好。SEM和TEM分析表明,纳米粒子的平均粒径为30 nm左右。系统地研究了各样品的发光性质包括激发谱、紫外-可见发射谱、近红外发射谱和荧光寿命。激发Ce3+的5d能级,在900～1050 nm波长范围得到很强的近红外发射。随着Yb3+离子浓度的增加,Ce3+的发射强度降低,Yb3+的发射强度先升高后降低,Ce3+的寿命减少,能量传递效率增加。作为一个下转换光转换器,这种材料应用于硅基太阳能电池前端,能够减少电池热损失,增加电池转换效率。

关键词(KeyWords)： Ce3+-Yb3+共掺;近红外发光;能量传递;效率;稀土

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李素文;林君;任慧娟;程子泳;李国岗;彭冲;

Email:

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