A New Blue‐Emitting Phosphor of Ce3+‐Activated Fluorosilicate Apatite Ba2Y3[SiO4]3F. Issue 4 (7th January 2014)

• Record Type: Journal Article
• Authors: Yu, Ruijin; Li, Hongjuan; Ma, Hailong; Wang, Caifeng; Wang, Huan; McKittrick, J.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 4(2014)
• Page Start: 1151
• Page End: 1156
• Publication Date: 2014-01-07
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12765
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace12765-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Blue‐emitting phosphor of Ce³⁺‐activated fluorosilicate apatite Ba₂Y₃[SiO₄]₃F was prepared via conventional solid‐state reaction method. The X‐ray powder diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) excitation and emission spectra, and the decay curves (lifetimes) were applied to characterize the phosphors. The effects of Ce³⁺ activator concentration on the luminescence properties were investigated. Ba₂Y_2.85Ce_0.15[SiO₄]₃F exhibits the brightest blue emission with CIE coordinates of (<italic>x </italic>= 0.231, <italic>y </italic>= 0.301). The crystallographic site of Ce³⁺ ions in Ba₂Y₃[SiO₄]₃F lattices was identified. Two kinds of crystallographic Ce³⁺ occupying MI and MII sites in Ba₂Y₃[SiO₄]₃F lattices result in two distinct emission centers. The internal PL quantum efficiency, the temperature‐dependent luminescence, and the activation energy of thermal quenching were investigated to evaluate the potential application. This is a new kind of blue‐emitting phosphor based on apatite structure.</p> </abstract>