UC San Diego

White light-emitting diode (WLED) has been widely used because of its excellent performance in solid-state lighting. Among all the white LEDs (WLEDs), the phosphor-converted WLED is the most popular one, and its performance depends on the characteristics of the phosphor to a great extent. For this reason, it is necessary to study new phosphors for their potential use in WLEDs. In this thesis, a new garnet CaEr2Mg2Si3O12 matrix for phosphors was prepared by a solution combustion synthesis. Parameters of the synthesis, such as fuel-to-oxidizer ratio, amounts of precursors, order of mixing, as well as combustion and calcination parameters were optimized during this process. The garnet structure was successfully obtained and confirmed by X-ray diffraction characterization technique.