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Preparation and luminescence properties of Ce3+-doped Gd5Si3O12N phosphor emerging red shift.
- Source :
-
Materials Research Bulletin . Apr2017, Vol. 88, p330-336. 7p. - Publication Year :
- 2017
-
Abstract
- Blue-emitting phosphors (Gd 1- x Ce x ) 5 Si 3 O 12 N (0 ≤ x ≤ 0.07) were prepared through a solid-state reaction under a reducing atmosphere. The excitation spectra exhibited several broad bands in the wavelength range from 240 to 400 nm, and the emission spectra consisted of a broad band covering from 360 to 550 nm. Two different emission centers corresponding to two different crystallographic sites in the host lattice were confirmed. The influence that the Ce 3+ concentration had on the photoluminescence of the prepared samples was examined, and the results indicate that an increase in the Ce 3+ concentration introduces a red-shift of the emission peak due to an increase in the Stokes shift. Concentration quenching occurs when the Ce 3+ content exceeds 3 mol%. In addition, the configurational coordinate model was used to finely explain the thermal quenching behavior of the phosphors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00255408
- Volume :
- 88
- Database :
- Academic Search Index
- Journal :
- Materials Research Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 120954342
- Full Text :
- https://doi.org/10.1016/j.materresbull.2017.01.007