用溶剂热法合成Yb3+、Er3+共掺的NaYF4 纳米上转换材料, 研究了去离子水、乙醇两种反应溶剂对材料性能的影响. 用X射线衍射光谱、扫描电镜和荧光光谱等测试手段对材料性能进行了对比分析. 结果表明: 以乙醇为溶剂并加入一定比例的EDTA, 所制备的上转换材料能发射较强的、可被太阳电池吸收的可见光.
Nanoparticles of Yb3+, Er3+-codoped sodium yttrium fluoride were prepared by solventthermal method. The properties of the prepared materials were characterized. The up-conversion luminescent properties of the NaYF4 : Yb3+, Er3+ nanoparticles were investigated. The effect of deionized water and ethanol as reaction medium on the performance of the up-conversion materials was studied. The results showed that the up-conversion nanoparticles had relatively high up-conversion effect when ethanol was used as reaction medium and simultaneously ethylenediaminetetraacetic acid (EDTA) was also added. The up-conversion phosphors emit visible light which could be well utilized by solar cells.
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