By a News Reporter-Staff News Editor at Electronics Newsweekly -- Current study results on Luminescence have been published. According to news reporting originating from Changchun, People's Republic of China, by VerticalNews correspondents, research stated, "The yellow-emitting Ca10Na(PO4)(7):Eu2+ phosphors were synthesized by conventional high-temperature solid-state reaction method. The phosphors were well characterized by powder X-ray diffraction, FT-IR spectra and diffuse reflectance spectra."
Our news editors obtained a quote from the research from the Changchun Institute of Applied Chemistry, "DFT calculation results showed that Ca10Na(PO4)(7) had an indirect bandgap with a bandgap energy of about 3.82 eV. Ca10Na(PO4)(7):Eu2+ showed a yellow emission band peaking at 550 nm under 350 nm excitation. The broad emission bandwidth (about 138 nm) of Ca10Na(PO4)(7):Eu2+ is favorable for white LEDs conversion phosphors. The optimal doping concentration of Eu2+ ions in Ca10Na(PO4)(7):Eu2+ phosphor was about 8 mol%. This study demonstrated that the energy transfer among the nearest-neighbor ions was the main mechanism of concentration quenching of Ca10Na(PO4)(7):Eu2+ phosphor."
According to the news editors, the research concluded: "These results indicate that Ca10Na(PO4)(7):Eu2+ may be potentially useful as a UV radiation-converting phosphor for white LEDs."
For more information on this research see: Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)(7): Eu2+ phosphor for white light-emitting diodes. Journal of Luminescence, 2013;143():132-136. 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)
The news editors report that additional information may be obtained by contacting H. Yu, Chinese Academy Sci, Changchun Inst Appl Chem, State Key Lab Electro Analyt Chem, Changchun 130022, People's Republic of China. Additional authors for this research include D.G. Deng, Y.Q. Li, S.Q. Xu, Y.Y. Li, C.P. Yu, Y.Y. Ding, H.W. Lu, H.Y. Yin and Q.L. Nie.
Keywords for this news article include: Asia, Changchun, Electronics, Luminescence, Light-emitting Diode, People's Republic of China
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