中国物理B ›› 2008, Vol. 17 ›› Issue (9): 3300-3305.doi: 10.1088/1674-1056/17/9/026

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Infrared-to-visible and infrared-to-violet upconversion fluorescence of rare earth doped LaF3 nanocrystals

王艳1, 狄卫华2, 张继森2, 曹春燕2, 秦伟平3   

  1. (1)Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (2)Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; (3)State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China;Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Acad
  • 收稿日期:2008-01-17 修回日期:2008-02-25 出版日期:2008-09-08 发布日期:2008-09-08
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10474096 and 50672030).

Infrared-to-visible and infrared-to-violet upconversion fluorescence of rare earth doped LaF3 nanocrystals

Wang Yan(王艳)b), Qin Wei-Ping(秦伟平)a)b)† , Di Wei-Hua(狄卫华)b), Zhang Ji-Sen(张继森)b), and Cao Chun-Yan(曹春燕)b)   

  1. a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China; b Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • Received:2008-01-17 Revised:2008-02-25 Online:2008-09-08 Published:2008-09-08
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10474096 and 50672030).

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摘要： This paper reports that hexagonal-phase LaF$_{3}$:Yb$^{3 + }_{0.20}$, Er$^{3 + }_{0.02}$ and LaF$_{3}$:Yb$^{3 + }_{0.20}$, Tm$^{3 + }_{0.02}$ nanocrystals (NCs) were synthesized via a hydrothermal method. The transmission electron microscopy, selected area electron diffraction, powder x-ray diffraction, and thermogravimetric analysis are used to characterize the NCs. Under 980 nm excitation, the Yb$^{3 + }$/Er$^{3 + }$ and Yb$^{3 + }$/Tm$^{3 + }$ codoped NCs colloidal solutions present bright green and blue upconversion fluorescence, respectively. These NCs show efficient infrared-to-violet and infrared-to-visible upconversion. The upconversion fluorescence mechanisms of LaF$_{3}$:Yb$^{3 + }_{0.20}$, Er$^{3 + }_{0.02}$ and LaF$_{3}$:Yb$^{3 + }_{0.20}$, Tm$^{3 + }_{0.02}$ NCs are investigated with a 980-nm diode laser as excitation source.

关键词: upconversion fluorescence, infrared-to-visible, infrared-to-violet, nanocrystals

Abstract: This paper reports that hexagonal-phase LaF$_{3}$:Yb$^{3 + }_{0.20}$, Er$^{3 + }_{0.02}$ and LaF$_{3}$:Yb$^{3 + }_{0.20}$, Tm$^{3 + }_{0.02}$ nanocrystals (NCs) were synthesized via a hydrothermal method. The transmission electron microscopy, selected area electron diffraction, powder x-ray diffraction, and thermogravimetric analysis are used to characterize the NCs. Under 980 nm excitation, the Yb$^{3 + }$/Er$^{3 + }$ and Yb$^{3 + }$/Tm$^{3 + }$ codoped NCs colloidal solutions present bright green and blue upconversion fluorescence, respectively. These NCs show efficient infrared-to-violet and infrared-to-visible upconversion. The upconversion fluorescence mechanisms of LaF$_{3}$:Yb$^{3 + }_{0.20}$, Er$^{3 + }_{0.02}$ and LaF$_{3}$:Yb$^{3 + }_{0.20}$, Tm$^{3 + }_{0.02}$ NCs are investigated with a 980-nm diode laser as excitation source.

Key words: upconversion fluorescence, infrared-to-visible, infrared-to-violet, nanocrystals

中图分类号:  (Nanocrystals, nanoparticles, and nanoclusters)

  • 78.67.Bf
78.55.Hx (Other solid inorganic materials) 81.07.Bc (Nanocrystalline materials) 81.16.-c (Methods of micro- and nanofabrication and processing) 81.70.Pg (Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis) 82.70.Dd (Colloids)