| abstract |
A laminated composite includes a wavelength-converting layer and a non-emissive blocking layer, wherein the emissive layer includes a garnet host material and an emissive guest material, and the non-emissive blocking layer includes a non-emissive blocking material. The metallic element constituting the non-emissive blocking material has an ionic radius which is less than about 80% of an ionic radius of an A cation element when the garnet or garnet-like host material is expressed as A 3 B 5 O 12 and/or an element constituting the emissive guest material, and the non-emissive blocking layer is substantially free of the emissive guest material migrated through an interface between the emissive layer and the non-emissive blocking layer. |