Luminous properties of SrGa2S3Se phosphors doped with Eu2+ for LEDs application

Abstract

Thio-selenide phosphor, SrGa2SeS3:Eu2+, was prepared using a solid-state chemical reaction method without the addition of toxic gases or other excess materials. The synthesized phosphor displayed a broad excitation band, which is suitable for blue or NUV LED applications and emits green light (528 nm). The samples were also excited with various wavelength emitting diodes (410 nm, 425 nm, and 455 nm) to assess their potential use as phosphors for white LED applications. The LED fabricated with the synthesized phosphor produced bluish green light using NUV LED with a CIE-1931 coordinate, Tc and Roof (0.2309, 03436), 117323 K and 18.2, respectively. (C) 2010 Elsevier B.V. All rights reserved.