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Spectral dependency of Eu2+-activated silicate phosphors on the composition for LED application

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Abstract

An Sr2SiO4-Ba2SiO4 material system doped by Eu2+ was studied for light emitting diodes (LEDs) application. The main concern was the precise control of excitation and emission spectra for maximum light yield and color coordinate, which was carried out by changing the composition of the alkaline earth ions in host lattice. The Sr2SiO4 : Eu-Ba2SiO4 : Eu system was found to be excellent for white LED applications with excitation in the 380–465 nm region. Especially, the yellow light intensity from (Sr,Ba)SiO4 : Eu phosphors was comparable to YAG : Ce phosphors in case of blue LED excitation.

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Authors and Affiliations

  1. Department of Chemical Engineering, ChungAng University, 156-756, Seoul, Korea

    Sang Hyeon Kim, Hyo Jin Lee, Kyeong Phil Kim & Jae Soo Yoo

Authors
  1. Sang Hyeon Kim
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  2. Hyo Jin Lee
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  3. Kyeong Phil Kim
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  4. Jae Soo Yoo
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Correspondence to Jae Soo Yoo.

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Kim, S.H., Lee, H.J., Kim, K.P. et al. Spectral dependency of Eu2+-activated silicate phosphors on the composition for LED application. Korean J. Chem. Eng. 23, 669–671 (2006). https://doi.org/10.1007/BF02706812

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  • DOI: https://doi.org/10.1007/BF02706812

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