Synthesis and color-tunable luminescence properties of novel calcium aluminate silicate chloride phosphors

• Published in: Current applied physics Vol. 10; no. 4; pp. 1087 - 1091
• Main Authors: Xia, Zhiguo, Du, Peng, Liao, Libing, Li, Guowu, Jin, Shuai
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2010; 한국물리학회
• Subjects: Luminescence; Optical properties; Phosphor; 물리학; Optical properties; Phosphor; Luminescence
• ISSN: 1567-1739; 1878-1675
• DOI: 10.1016/j.cap.2010.01.002

Eu 2+ and Mn 2+ co-doped calcium aluminate silicate chloride phosphors with the chemical composition of Ca 3Al 2Si 2O 8Cl 4:Eu 2+, Mn 2+ have been prepared by a solid-state method, and their luminescence properties have been investigated by tuning the En 2+/Mn 2+ ions concentration. The phase formation and microstructure of Ca 3Al 2Si 2O 8Cl 4:Eu 2+, Mn 2+ phosphors have been illuminated by XRD and SEM analysis. Photoluminescence (PL) spectrum reveals that Ca 3Al 2Si 2O 8Cl 4:Eu 2+ exhibits a strong blue emission band centered at 431 nm, while Ca 3Al 2Si 2O 8Cl 4:Eu 2+, Mn 2+ can emit bluish-white light by adjusting the Mn 2+ content appropriately. The energy transfer mechanism involving Eu 2+–Mn 2+ have also been investigated.