Structure and luminescence properties of a novel broadband green-emitting oxyapatite-type phosphor. Issue 20 (23rd March 2020)

• Record Type: Journal Article
• Authors: An, Na; Xu, Fei; Guo, Qingfeng; Liao, Libing; Mei, Lefu; Liu, Haikun
• Is Part Of: RSC advances. Volume 10:Issue 20(2020)
• Page Start: 11608
• Page End: 11614
• Publication Date: 2020-03-23
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra00560f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A single-phase novel green phosphor Sr2 Y3 (SiO4 )2 (PO4 )O2 :Eu 2+ with apatite structure was obtained for the first time. Abstract : In recent years, synthetic apatite-doped rare-earth luminescent materials and their optical properties have attracted extensive worldwide attention. In this study, a series of novel green phosphors Sr2 Y3 (SiO4 )2 (PO4 )O:Eu 2+ with apatite structure was fabricated via a high temperature solid-state reaction. X-ray diffraction, structure refinement, photoluminescence excitation, emission spectra, and temperature-dependent emission intensity were employed to describe the phase and property of the samples. Under the excitation of 365 nm, the phosphors emit strong green emission in the broad band range from 400 nm to 700 nm, which almost covers the visible light spectrum. The quenching concentration of Eu 2+ in Sr2 Y3 (SiO4 )2 (PO4 )O was about 0.05, which was attributed to the dipole–dipole interactions. The evidence that the as-prepared phosphor can be successfully excited by near ultraviolet light indicates that it can be potentially used as a near UV-convertible phosphor for white light-emitting diodes.