| abstract |
A semiconductor nanoparticle-based optical conversion layer for use in an illumination device, and an illumination device comprising the same. In various embodiments, spherical core / shell seeded nanoparticles (SNP) or nanorod seeded nanoparticles (RSNP) are used to form a conversion layer with high optical density, and low reabsorption, and a good combination of small FRET. do. In some embodiments, the SNP or RSNP forms a conversion layer without a host matrix. In some embodiments, the SNP or RSNP is embedded in a host matrix such as a polymer or silicone. The conversion layer can be made extremely thin, showing a good combination of optical properties. Illuminators comprising SNP or RSNP based conversion layers are efficient in energy and exhibit good color emission. |