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New Luminescence Study Findings Have Been Reported by Researchers at China University of Science and Technology

February 28, 2014



By a News Reporter-Staff News Editor at Science Letter -- A new study on Luminescence is now available. According to news reporting originating in Hefei, People's Republic of China, by NewsRx journalists, research stated, "Luminescent properties of Eu3+ ions in orthorhombic KGdF4 nanocrystals are investigated with high resolution emission spectra measured under the selective excitation of a tunable laser at the temperature of 20 K. Only the emission from one kind of site is detected, and the crystal-field levels of Eu3+ ions in this site, up to D-5(2) multiplet, have been identified according to the recorded emission spectra. The symmetry of the site occupied by Eu3+ ions is discussed based on the numbers of emission lines of D-5(0)-F-7(j) transitions."

The news reporters obtained a quote from the research from the China University of Science and Technology, "A temperature-dependent luminescence is observed under the excitation of D-5(2) at 465.5 nm. The emission from D-5(1) is nearly absent at 20 K, while plays an important role in the emission spectrum at 300 K. This indicates that the direct relaxation from D-5(2) to D-5(0) dominates at low temperature."

According to the news reporters, the research concluded: "The different processes of the relaxation of D-5(2) at 20 and 300 K are discussed with the measured decay curves of the emission from D-5(0)."

For more information on this research see: Temperature-dependent luminescence and crystal-field levels of Eu3+ in orthorhombic KGdF4. Journal of Luminescence, 2014;146():371-375. Journal of Luminescence can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Luminescence - www.elsevier.com/wps/product/cws_home/505700)

Our news correspondents report that additional information may be obtained by contacting X.T. Wei, China University of Science & Technology, Sch Phys Sci, Center Phys Expt, Hefei 230026, People's Republic of China. Additional authors for this research include G.C. Jiang, Y.G. Qin, Y.H. Chen, C.K. Duan and M. Yin (see also Luminescence).

Keywords for this news article include: Asia, Hefei, Luminescence, People's Republic of China

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Source: Science Letter


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