| abstract |
Some embodiments disclosed herein include a ceramic body including a first region and a second region. The first region may comprise a host material and a first concentration of dopant effective to produce luminescence. The second region may comprise a host material and a second concentration of dopant. In some embodiments, the first region has an average grain size greater than the average grain of the second region. The ceramic body, in some embodiments, exhibits excellent internal quantum efficiency (IQE). Some embodiments disclosed herein include methods for making and using the ceramic bodies disclosed herein. In addition, some embodiments disclosed herein include a lighting apparatus including the ceramic body disclosed herein. |