Eu[sup 2+]-Doped High-Temperature Phase Ca[sub 3]SiO[sub 4]Cl[sub 2]

In this paper, we synthesized a novel yellowish orange phosphor, -doped high-temperature phase (HTP) at 1020°C. The primary crystal structure of is determined as monoclinic structure with a space group of . The excitation spectrum of -doped exhibits a broad-band between 250 and 500 nm with three peaks of around 327, 371, and 426 nm, which are coupled well with the near-UV (n-UV) or deep blue emission of GaN-based light-emitting diodes (LEDs). Its emission spectrum shows a single intense broad emission band centered at 572 nm. The measured chromaticity of yellowish orange luminescence is , . -doped would be suitable for yellowish orange phosphor of white LED because is excellent in the excitation spectral profile and the chromaticity.