Tunable luminescence and energy transfer in Ca3SiO4Cl2:Ce3+, Li+, Mn2+, Eu2+ phosphors. (21st February 2017)

• Record Type: Journal Article
• Authors: Li, Xiangqi; Xie, Xiuzhen; Wei, Haiting; Zhong, Minzhen
• Is Part Of: Luminescence. Volume 32:Number 6(2017)
• Page Start: 1025
• Page End: 1030
• Publication Date: 2017-02-21
• Subjects: Ca3SiO4Cl2 -- energy transfer -- single‐phase phosphors -- tunable color; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.3286
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: A series of color‐tunable Ca3–2x‐y‐z SiO4 Cl2 (CSC):xCe 3+, xLi +, yMn 2+, zEu 2+ phosphors with low temperature phase structure was synthesized via the sol–gel method. An energy transfer process from Ce 3+ to Mn 2+ in CSC:0.01Ce 3+, 0.01Li +, yMn 2+ (y = 0.03–0.09) and the mechanism was verified to be an electric dipole–dipole interaction. The Ce 3+ and Mn 2+ emission intensities were greatly enhanced by co‐doping Eu 2+ ions into CSC:0.01Ce 3+, 0.01Li +, 0.07Mn 2+ phosphors due to competitive energy transfers from Eu 2+ /Ce 3+ to Mn 2+, and Ce 3+ to Eu 2+ . Under 332 nm excitation, CSC:0.01Ce 3+, 0.01Li+, 0.07Mn 2+, zEu 2+ (z = 0.0005–0.002) exhibited tunable emission colors from green to white with coexisting orange, green and violet‐blue emissions. These phosphors could have potential application in white light‐emitting diodes.