Preparation and luminescence characteristics of Eu²⁺ activated silicate phosphor

This paper synthesizes the Sr_2SiO_4:Eu^2 + phosphor by high temperature solid-state reaction. The emission spectrum of Sr_2SiO_4:Eu^2 + shows two bands centred at 480 and 547\,nm, which agree well with the calculation values of emission spectrum, and the location of yellow emission of Sr_2SiO_4:Eu^2 + is influenced by the Eu^2 + concentration. The excitation spectrum for 547 nm emission has two bands at 363 and 402 nm. The emission spectrum of white light emitting diodes (w-LEDs) based on Sr_2SiO_4:Eu^2 + phosphor + InGaN LED was investigated.