Optical properties of Er^(3+) doped KYb_xF_(3x+1)(x=2, 3) upconverting nanoparticles  

作　　者：曹中民 陈永虎 周少帅 段昌奎 尹民 

机构地区：[1]Department of Physics, University of Science and Technology of China

出　　处：《Journal of Rare Earths》2015年第9期911-914,共4页稀土学报（英文版）

基　　金：supported by the National Key Basic Research Program of China(2013CB921800);the National Natural Science Foundation of China(11374291,11204292,11274299,11311120047);the Fundamental Research Funds for the Central Universities(WK2030020021);Anhui Provincial Natural Science Foundation(1308085QE75)

摘　　要：Well dispersed orthorhombic structure KYb2F7：2 mol.%Er3＋ and KYb3F10：2 mol.%Er3＋nanoparticles were synthesized through solvothermal method. Measurements of X-ray diffi＇action （XRD）, transmission electron microscopy （TEM） and upconversion spectra showed excellent morphology and optical properties of the as-prepared samples. The intensity ratio of the red emission （650 nm） to the green emission （545 nm） in these two materials was much stronger than that in other Er3＋ doped materials. The transition mechanism of the processes was investigated and discussed. Due to their strong red emission, the samples are promising for applica- tions in display, color tuning, and biolabeling.Well dispersed orthorhombic structure KYb2F7：2 mol.%Er3＋ and KYb3F10：2 mol.%Er3＋nanoparticles were synthesized through solvothermal method. Measurements of X-ray diffi＇action （XRD）, transmission electron microscopy （TEM） and upconversion spectra showed excellent morphology and optical properties of the as-prepared samples. The intensity ratio of the red emission （650 nm） to the green emission （545 nm） in these two materials was much stronger than that in other Er3＋ doped materials. The transition mechanism of the processes was investigated and discussed. Due to their strong red emission, the samples are promising for applica- tions in display, color tuning, and biolabeling.

关 键 词：NANOPARTICLES UPCONVERSION solvothermal method intensity ratio rare earths 

分 类 号：O611.4[理学—无机化学] TB383.1[理学—化学]