Dy3+ and Eu3+ co-activated gadolinium aluminate borate phosphor: Synthesis, enhanced luminescence, energy transfer and tunable color
No Thumbnail Available
Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The synthesis of GdAl3(BO3)4 phosphors incorporated with activators of Dy3+ and Dy3+/ Eu3+was successful and achieved through the gel combustion method. Powder X-ray diffraction (XRD) was employed to identify phase purity and the effects of dopant concentration on the crystallographic structure. The results of Photoluminescence (PL) measurements revealed that the intensity and lifetime of luminescence properties varied depending on the concentrations of Dy3+ and Eu3+ ions. The dependence of luminescence intensity on doping concentration is investigated with respect to the energy transfer process between Eu3+ and Dy3+ ions. A decrease in luminescence lifetime occurs with increasing concentrations of Eu3+ co-doping. The energy transfer was also investigated using decay curve analysis. The co-doping of Eu3+ significantly boosts the energy transfer efficiency from 26% to 84%. These findings make GdAl3(BO3)4: Dy3+, Eu3+ phosphors an ideal choice for LED applications in solid state lighting and displays. © 2023 Elsevier Ltd
Description
Keywords
Dysprosium compounds , Energy transfer , Europium compounds , Lighting , Phosphors , Photoluminescence , Rare earths , Sodium Aluminate , X ray diffraction , Borate phosphor , Co-doping , Decay curves , Energy-transfer , Enhanced luminescence , Gadolinium aluminate , Luminescence energy transfers , Rare-earths , Tunable color , X- ray diffractions , Gadolinium compounds