Solid-state lighting holds the promise of addressing the rapidly increasing need for energy conservation. Phosphor-converted (PC), indium gallium nitride (InGaN) based white LEDs have advanced to compete with some traditional light sources in certain applications. However, challenges remain to reach the 200 lumens per watt industry target. Past studies have addressed preparation methods and geometric tailoring of phosphor particles to improve quantum efficiency, and placement of phosphor to improve light output and luminous efficacy.1-4 The SPE (scattered photon extraction) method, in which the optics between the chip and the remote phosphor layer are tailored to extract the backscattered light, experimentally showed as much as 60% improvement in light output and luminous efficacy.4 While light output and luminous efficacy improvements are needed, improvements are also needed in color properties, rendering, and white light appearance. Mixing a yellow or green phosphor, like YAG:Ce, with a narrower band red phosphor, like SrS:Eu2+, is one way to improve color.5 A few studies show that mixing multiple phosphors into a single mixture results in lower light output compared to stacking them in layers.6,7 However, in all these studies, the multiple layers were placed adjacent to the die. No studies have systematically analyzed multiple phosphors in remote phosphor configurations. The objective of this study was to understand how multiple phosphors in a mixture or stacked layers affect the final performance of the SPE white LED package, in terms of light output and color properties.