Abstract
The luminescence properties of Eu2+ and Mn2+ co-activated (Ba,Ca,Sr)3MgSi2O8 phosphors prepared by combustion synthesis were studied. Eu2+-activated (Ba,Ca,Sr)3MgSi2O8 has a broad blue emission band centered at 450–485nm and Eu2+–Mn2+-activated (Ba,Ca,Sr)3MgSi2O8 exhibits a red emission around 620–703nm, depending on the relative concentrations of Ba, Ca and Sr. The particle size of Eu2+ and Mn2+ co-activated (Ba,Ca)3MgSi2O8 ranges from 300nm to 1μm depending on the metal ion and are agglomerated due to post-synthesis, high temperature annealing. The green emission of Ba3MgSi2O8 originates from secondary phases (Ba2SiO4 and BaMgSiO4) confirmed by emission spectra and X-ray diffraction patterns. The secondary phases of Ba3MgSi2O8 are removed by the addition of Sr. The quantum efficiencies range from 45% to 70% under 400nm excitation and the lifetime of red emission of Ba3MgSi2O8 decreases significantly with increasing temperature, which is 54% at 400K of that at 80K compared to that of blue emission (90% at 400K of that at 80K).
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
