Luminous properties of Sr1−xZnxSe:Eu2+ phosphors for LEDs application

✍ Scribed by Hong Jeong Yu; Wonkeun Chung; Sun Hee Park; Jihyun Kim; Sung Hyun Kim

• Book ID: 104022335
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 344 KB
• Volume: 326
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2011.01.056

✦ Synopsis

Alkali earth selenide phosphor, SrSe:Eu 2 + and Sr 1 À x Zn x Se:Eu 2 + , was prepared using a solid-state chemical reaction method. The synthesized phosphor displayed a broad excitation band, which is suitable for blue or near UV LED applications and emits green light (563 nm). Zn 2 + substitution for Sr 2 + greatly enhances the green emission of the phosphors. The samples were also excited with various wavelength emitting diodes (410, 425, and 455 nm) to assess their potential use as phosphors for white LED applications. The LED fabricated with the synthesized phosphor produced white light using blue LED with a CIE-1931 coordinate, T c and R a of (0.3199, 0.2777) 6499 K and 49.7, respectively.