Synthesis and competitive luminescence quenching mechanism of Ca3Al2O6:Ln3+ (Ln: Dy and Sm) phosphors
| dc.contributor.author | Bakr M. | |
| dc.contributor.author | Kaynar Ü.H. | |
| dc.contributor.author | Ayvacikli M. | |
| dc.contributor.author | Benourdja S. | |
| dc.contributor.author | Karabulut Y. | |
| dc.contributor.author | Hammoudeh A. | |
| dc.contributor.author | Can N. | |
| dc.date.accessioned | 2025-04-10T11:06:11Z | |
| dc.date.available | 2025-04-10T11:06:11Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | Sm3+ and Dy3+ activated Ca3Al2O6 phosphors were produced through a gel combustion method using Urea + β-Alanine, Urea, and Urea + Glycine as fuels. The crystal structure and the phase purity of the obtained materials were characterized by X-ray powder diffraction (XRD). Ca3Al2O6:Sm3+ phosphor shows characteristic emission lines (565 nm, 602 nm, 649 nm, and 714 nm) in the orange red region assigned to 4G5/2→6HJ (J = 5/2, 7/2, 9/2, 11/2) transitions of Sm3+. The strongest peak is located at 602 nm. Emission spectra of Ca3Al2O6:Dy3+ show that there are two dominant peaks centered at 480 nm and 573 nm emitting blue and yellow light. Optimum doping concentrations of Sm(NO3)3 and Dy(NO3)3 are 0.01 % and 0.03 %, respectively. The concentration quenching mechanism is verified to be a dipole-dipole interaction as the type of energy transfer among Sm3+-Sm3+ and Dy3+-Dy3+ ions. The critical distance is also calculated to be 24.19 Å and 16.77 Å, respectively. © 2020 Elsevier Ltd | |
| dc.identifier.DOI-ID | 10.1016/j.materresbull.2020.111010 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14701/46540 | |
| dc.publisher | Elsevier Ltd | |
| dc.title | Synthesis and competitive luminescence quenching mechanism of Ca3Al2O6:Ln3+ (Ln: Dy and Sm) phosphors | |
| dc.type | Article |