Abstract
The crystal structure of Ba2-xMgB2O6:xEu3+ phosphors, synthesized using a solid-state reaction, have been confirmed by X-ray diffraction analysis. This study focuses on the site occupancy preference of Eu3+ ions within the matrix, which was determined using bond energy theory, fluorescent spectra, and a consideration of energy transport and decay curves. The impact of Eu3+ ion concentration on luminescence has been assessed, and an optimal concentration (x = 0.22) identified. The critical distance, Rc was 9.6 Å, with a calculated θ value of 19.67, indicating that quadrupole-quadrupole interaction plays a critical role in the quenching Ba2-xMgB2O6:xEu3+ phosphors. The Ba2-xMgB2O6:xEu3+ phosphors exhibited a color purity of 99.26%, and a quantum efficiency of 49.68%. The activation energy Ea was determined to equal 0.2987 eV. The results have established Ba1.78MgB2O6:0.22Eu3+ as a red fluorescent powder with high quantum efficiency and a millisecond fluorescence lifetime.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
