TY - JOUR
T1 - Hydrothermal synthesis and luminescence properties of octahedral LiYbF 4
T2 - Er3+ microcrystals
AU - Lu, Chunhua
AU - Huang, Wenjuan
AU - Ni, Yaru
AU - Xu, Zhongzi
PY - 2011/2
Y1 - 2011/2
N2 - LiYbF4: Er3+ octahedral microcrystals have been successfully prepared through a facile hydrothermal method assisted with EDTA (ethylenediaminetetraacetic acid). X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric and differential scanning calorimeters (TG-DSC), photoluminescence (PL) spectra are used to characterize the samples. Under 976 nm excitation, the upconversion (UC) luminescence emission spectra of LiYbF4: Er3+ microcrystals show the characteristic Er 3+ emissions. The results show that the infrared light emissions at 792 nm of 4I9/2 → 4I15/2 are dominantly strong unusually, while the green emissions at 526 and 545 nm assigned to 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2, respectively, and the red emission at 667 nm of 4F9/2→ 4I15/2 are relatively weaker. Most importantly, the samples show more efficient luminescence with further heat treatment.
AB - LiYbF4: Er3+ octahedral microcrystals have been successfully prepared through a facile hydrothermal method assisted with EDTA (ethylenediaminetetraacetic acid). X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric and differential scanning calorimeters (TG-DSC), photoluminescence (PL) spectra are used to characterize the samples. Under 976 nm excitation, the upconversion (UC) luminescence emission spectra of LiYbF4: Er3+ microcrystals show the characteristic Er 3+ emissions. The results show that the infrared light emissions at 792 nm of 4I9/2 → 4I15/2 are dominantly strong unusually, while the green emissions at 526 and 545 nm assigned to 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2, respectively, and the red emission at 667 nm of 4F9/2→ 4I15/2 are relatively weaker. Most importantly, the samples show more efficient luminescence with further heat treatment.
KW - A. Fluorides
KW - A. Optical materials
KW - C. Differential scanning calorimetry (DSC)
KW - D. Luminescence
KW - D. Microstructure
UR - http://www.scopus.com/inward/record.url?scp=78651303408&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2010.11.008
DO - 10.1016/j.materresbull.2010.11.008
M3 - 文章
AN - SCOPUS:78651303408
SN - 0025-5408
VL - 46
SP - 216
EP - 221
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 2
ER -