Eu-掺杂CeB6纳米晶的合成与光吸收研究

采用固相反应法成功地将Eu元素掺入CeB₆纳米晶中, 并系统地研究了对其光吸收性能的影响规律。由XRD分析、扫描电镜和透射电镜能谱分析结果充分证明了Eu元素成功地掺入了CeB₆晶格中。光吸收结果表明, 随着Eu掺杂量的增加, CeB₆吸收峰波长从938 nm增加至1718 nm, 产生了“红移”现象。与此同时, 透射光波长也从可见光区域的798 nm 红移至近红外区域的1138 nm。本文揭示了通过Eu掺杂可使CeB₆透射光波长和吸收峰波长连续可调。这一特性对于拓展CeB₆的光学应用具有重要意义。

Synthesis and Optical Absorption of Eu-doped CeB6 Nanocrystalline

The Eu-doped CeB₆ nanocrystalline was successfully synthesized by a solid-state reaction and their optical properties were investigated. The XRD and EDS analyses fully confirm that the Eu element has been successfully doped into the lattice of CeB₆. The optical absorption results show that maximum absorption red-shifted from 938 nm to 1718 nm. Meanwhile, it is interestingly found that the maximum transmission also red-shifts from visible region of 798 nm to near-infrared region of 1138 nm, which is for the first time to be obtained tunable optical characteristic CeB₆ by Eu doping. Thus, these interesting findings on CeB₆ nanocrystalline can extend its optical application.