TY - JOUR
T1 - Luminescence and energy transfer in water soluble CeF 3 and CeF 3:Tb 3+ nanoparticles
AU - Sun, Zhong
AU - Li, Yuebin
AU - Zhang, Xing
AU - Yao, Mingzhen
AU - Ma, Lun
AU - Chen, Wei
PY - 2009/11
Y1 - 2009/11
N2 - CeF 3 and CeF 3:Tb 3+ water soluble nanoparticles (NPs) were prepared by wet chemistry, and their structure and luminescence properties were studied systematically. The results of XRD indicate that the obtained CeF 3 and CeF 3:Tb 3+ NPs have a hexagonal structure with the P 6 3/mcm space group. The average size of CeF 3 NPs is about 10 nm, and that of CeF 3:Tb 3+ NPs is about 5.5 nm as measured from transmission electron microscope (TEM). The aqueous solution sample of CeF 3 NPs has an emission peaking at 325.5 nm, which is from the 5d → 4f transition of Ce 3+, and CeF 3:Tb 3+ NPs have a broad emission at 355.5 nm, which is from the 5d → 4f transition of Ce 3+ (325.5 nm), and several sharp emissions in the visible ranges that are from the 5D 4 → 7F J transition of Tb 3+. As the concentration of Tb 3+ increases, the emission intensity of Ce 3+ decreases gradually, while the emission intensity of Tb 3+ first increases and then decreases. Our observations indicate that there is an energy transfer from Ce 3+ to Tb 3+ in the CeF 3:Tb 3+ nanoparticles, and the maximal energy transfer rate is estimated to be 93.2% at the Tb 3+ concentration of 25%.
AB - CeF 3 and CeF 3:Tb 3+ water soluble nanoparticles (NPs) were prepared by wet chemistry, and their structure and luminescence properties were studied systematically. The results of XRD indicate that the obtained CeF 3 and CeF 3:Tb 3+ NPs have a hexagonal structure with the P 6 3/mcm space group. The average size of CeF 3 NPs is about 10 nm, and that of CeF 3:Tb 3+ NPs is about 5.5 nm as measured from transmission electron microscope (TEM). The aqueous solution sample of CeF 3 NPs has an emission peaking at 325.5 nm, which is from the 5d → 4f transition of Ce 3+, and CeF 3:Tb 3+ NPs have a broad emission at 355.5 nm, which is from the 5d → 4f transition of Ce 3+ (325.5 nm), and several sharp emissions in the visible ranges that are from the 5D 4 → 7F J transition of Tb 3+. As the concentration of Tb 3+ increases, the emission intensity of Ce 3+ decreases gradually, while the emission intensity of Tb 3+ first increases and then decreases. Our observations indicate that there is an energy transfer from Ce 3+ to Tb 3+ in the CeF 3:Tb 3+ nanoparticles, and the maximal energy transfer rate is estimated to be 93.2% at the Tb 3+ concentration of 25%.
KW - CeF
KW - CeF :Tb
KW - Energy transfer
KW - Luminescence
KW - Nanoparticles
KW - Quantum yield
UR - http://www.scopus.com/inward/record.url?scp=70350277264&partnerID=8YFLogxK
U2 - 10.1166/jnn.2009.1821
DO - 10.1166/jnn.2009.1821
M3 - Article
AN - SCOPUS:70350277264
SN - 1533-4880
VL - 9
SP - 6283
EP - 6291
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
IS - 11
ER -