J4 ›› 2011, Vol. 46 ›› Issue (3): 13-17.
• Articles •
GENG Jia-qiang, LI Zhen, TIAN Long, LIU Wei*
One-dimensional CePO4 micro-nanofibers doped with Dy3+ were prepared by using electrospinning technique and high-temperature calcinations. Their structures and optical properties were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetry-differential thermal analysis (TG-DTA) and photoluminescence (PL) spectra. SEM images indicated that the diameters of fibers were reduced to 150nm when the samples were calcined at 1100℃. XRD results showed that the crystallinity of CePO4: Dy3+ micro-nanofibres become better with increased calcination temperature and the micro-nanocrystals are the monoclinic phase. The results of FTIR agreed well with the results of XRD. The PL spectra showed considerable enhancement of photoluminescence, especially the emission spectra ofCePO4: Dy3+, which exhibited the characteristic emission of Dy3+ in 4F9／2-6H15／2and4F9／2-6H13／2 transitions and showed that the emission intensities increase with the concentration of Dy3+ increasing in the range of zero to 5.0 ％.
CePO4: Dy3+ ; micro-nanofibers; electrospinning; luminescence
GENG Jia-qiang, LI Zhen, TIAN Long, LIU Wei*. Preparation and luminescence properties of CePO4: Dy3+ micro-nanofibers[J].J4, 2011, 46(3): 13-17.
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