Auzel F. Upconversion and anti-stokes processes with f and d ions in solids
. Chem. Rev., 2004, 104 (1):139-173.
Huang L H, Liu X R, Xu W, et al. Infrared and visible luminescence properties of Er3+ and Yb3+ ions codoped Ca3Al2Ge3O12 glass under 978 nm diode laser excitation
. J. Appl. Phys., 2001, 90 (11):5550-5553.
Man S O, Pun E Y B, Chuang P S. Upconversion luminescence of Er3+ in alkali bismuth gallate glasses
. Appl. Phys. Lett., 2000, 77 (4):483-485.
Dou Jingtao, Hou Yanbing. Upconversion luminescence of ZBLAN ∶ Yb3+, Tm3+ co-excited by double-frequency with both 808 and 980 nm laser
. Chin. J. Lumin. (发光学报), 2008, 29 (1):85-88 (in Chinese).
Huang Minwen, Meng Fanyi, Yuan Xinghai, et al. Research on upconversion spectra of NaY1-x-yF4 ∶ Yb3+y,Tm3+x nano-particles
. Chin. J. Lumin. (发光学报), 2008, 29 (1):192-194 (in Chinese).
Liang Lifang, Zhuang Jianle, Wu Hao, et al. White up-conversion emission of hydrothermolly synthesized hexagonal NaYF4 ∶ Er3+/Tm3+
. Chin. J. Lumin. (发光学报), 2008, 29 (6):996-1002 (in Chinese).
Wang F, Dev K Chatterjee, Li Z Q, et al. Synthesis of polyethylenimine/NaYF4 nanoparticles with upconversion fluorescence
. 2006, 17 (23):5786-5791.
Shen J, Sun L D, Yan C H. Luminescent rare earth nanomaterials for bioprobe applications
. Dalton Trans., 2008, (42):5687-5697.
Wang L Y, Li Y D. Green upconversion nanocrystals for DNA detection
. Chem. Commun., 2006, (24):2557-2559.
Hu H, Xiong L Q, Zhou J, et al. Multimodal-Luminesence core-shell nanocomposites for targeted imaging of tumor cells
. Chem. Eur. J., 2009, 15 (14):3577-3584.
Qin G S. Rare earth ions doped violet and ultraviolet upconversion laser materials and laser manipulation of a bubble . Changchun: Changchun Institute of Optics, Fine Mechanics and Physics, 2004 (in Chinese).
Wang G F, Qin W P, Wang L L, et al. Intense ultraviolet upconversion luminescence from hexagonal NaYF4 ∶ Yb3+/Tm3+ microcrystals