Analysis of green luminescent Tb3+:Ca4GdO(BO3)3 powder phosphor

This paper reports on the emission analysis of a green luminescent Tb3+:Ca4GdO(BO3)3 powder phosphor based on the measurements of excitation, emission and lifetimes. Besides this, we have also observed an intense green emission from this powder phosphor under an UV source. The emission transitions of (5D4→7F3,4,5,6) with λexci=257 nm have been measured. Particularly, the green emission transition (5D4→7F5) at 553 nm has been found to be more prominent and intense. Such green strong emission displaying powder phosphor will find applications in the development of coated screens in certain electronic systems. Apart from the emission analysis of this phosphor, XRD, SEM and FTIR studies have also been carried out in order to understand the structural details of it.