Synthesis of colloidal LaF3: 0.04Yb3+, 0.01Er3+ nanocrystals with green upconversion luminescence

• Published in: Journal of rare earths Vol. 26; no. 1; pp. 40 - 43
• Main Authors: WANG, Yan, QIN, Weiping, ZHANG, Jisen, CAO, Chunyan, ZHANG, Jishuang, JIN, Ye
• Format: Journal Article
• Language: English
• Published: State Key Laboratory of Integrated Optoelectronics,College of Electronic Science & Engineering,Jilin University,Changchun 130012,China%Key Laboratory of Excited State Processes,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033, China 01.02.2008; Key Laboratory of Excited State Processes,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033, China; Graduate School of Chinese Academy of Sciences,Beifing 100049,China%Key Laboratory of Excited State Processes,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033, China
• Subjects: colloidal; upconversion luminescence; LaF3:0.04Yb3+,0.01Er3; nanoerystals; rare earths
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(08)60033-2

S1; A synthesis of LaF3:0.04Yb3+,0.01Er3+ nanocrystals with oleic acid as a capping iigand was presented. The X-Ray Diffraction (XRD) pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy (TEM) demonstrated that the average size of the nanocrystals was less than 10 nm, with a narrow size distribution. The nanocrystals were dispersible in nonpolar solvents and form a fully transparent colloidal solution, and the solution was stable for several months without any aggregates. The Yb3+-Er3+ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrystals were potentially applicable in biolabeling and bioimaging.