| 摘要 |
Novel orange phosphors are disclosed having the comprise silicate-based compounds having the formula (Sr,A 1 ) x (Si,A 2 )(O,A 3 ) 2+x :Eu 2+ , where A 1 is at least one divalent cation (a 2+ ion) including Mg, Ca, Ba, or Zn, or a combination of 1+ and 3+ cations; A 2 is a 3+, 4+, or 5+ cation, including at least one of B, Al, Ga, C, Ge, P; A 3 is a 1-, 2-, or 3- anion, including F, Cl, and Br; and x is any value between 2.5 and 3.5, inclusive. The formula is written to indicate that the A 1 cation replaces Sr; the A 2 cation replaces Si, and the A 3 anion replaces O. These orange phosphors are configured to emit visible light having a peak emission wavelength greater than about 565 nm. They have applications in white LED illumination systems, plasma display panels, and in orange and other colored LED systems.
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