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2009 Volume 18 Issue 5
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Wang Zhi-Jun, Yang Zhi-Ping, Guo Qing-Lin, Li Pan-Lai, Fu Guang-Sheng. 2009: Luminescence characteristics of Eu2+ activated Ca2SiO4, Sr2SiO4 and Ba2SiO4 phosphors for white LEDs, Chinese Physics B, 18(5): 2068-2071.
Citation: Wang Zhi-Jun, Yang Zhi-Ping, Guo Qing-Lin, Li Pan-Lai, Fu Guang-Sheng. 2009: Luminescence characteristics of Eu2+ activated Ca2SiO4, Sr2SiO4 and Ba2SiO4 phosphors for white LEDs, Chinese Physics B, 18(5): 2068-2071.
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Luminescence characteristics of Eu2+ activated Ca2SiO4, Sr2SiO4 and Ba2SiO4 phosphors for white LEDs

  • College of Physics Science & Technology, Hebei University, Baoding 071002, China

  • Available Online: 30/05/2009
  • Fund Project: Hebei Provincial Technology Development Foundation of China(Grant 51215103b)%Science Foun-dation of Hebei University of China(Grant 2006Q06)
  • This paper investigates the luminescence characteristics of Eu2+ activated Ca2SiO4, Sr2SiO4 and Ba2SiO4 phos-phors. Two emission bands are assigned to the f-d transitions of Eu2+ ions doped into two different cation sites in host lattices, and show different emission colour variation caused by substituting M2+ cations for smaller cations. This be-haviour is discussed in terms of two competing factors of the crystal field strength and covalence. These phosphors with maximum excitation of around 370 nm can be applied as a colour-tunable phosphor for light-emitting diodes (LEDs) based on ultraviolet chip/phosphor technology.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Luminescence characteristics of Eu2+ activated Ca2SiO4, Sr2SiO4 and Ba2SiO4 phosphors for white LEDs

  • Available Online: 30/05/2009

Abstract: This paper investigates the luminescence characteristics of Eu2+ activated Ca2SiO4, Sr2SiO4 and Ba2SiO4 phos-phors. Two emission bands are assigned to the f-d transitions of Eu2+ ions doped into two different cation sites in host lattices, and show different emission colour variation caused by substituting M2+ cations for smaller cations. This be-haviour is discussed in terms of two competing factors of the crystal field strength and covalence. These phosphors with maximum excitation of around 370 nm can be applied as a colour-tunable phosphor for light-emitting diodes (LEDs) based on ultraviolet chip/phosphor technology.

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