The Light Features and Bredigite Layout for Orthosilicate Phosphor in WLED Devices

Abstract

We created a green phosphor Ca14-xEuxMg2[SiO4]8 or CMS:Eu 2+ to be utilized in WLED devices. The phosphor offers a wide spectrum achieving the highest value of 505 nm when excited at 400 nm, as a result of a shift between the excited state of 4f 6 5d and the ground state of 4f 7 in an ion of Eu 2+ . The interactivity of dipole-dipole appeared to be a primary power shift for the electrical multipolar nature of the phosphor. We acquired a critical distance measured at 12.9 Å as well as 14.9 Å via a critical Eu 2+ concentration as well as the Dexter hypothesis on power shift. Via an encapsulant, we combined CMS:Eu 2+ as well as a phosphor in red with a LED device having a λmax value of 395 nm and managed to acquire white illumination having a CRI value measured at 91 at a 20-milliampere forward bias current. In addition, we also examined the layout as well as the light features in CMS:Eu 2+ .