| abstract |
An optical conversion layer based on semiconductor nanoparticles for use in an illumination device, and an illumination device comprising the optical conversion layer. In various embodiments, spherical core / shell seed nanoparticles (SNP) or nanorod seed nanoparticles (RSNP) are used to provide an excellent combination of high optical density (OD), low reabsorption and small FRET. A conversion layer is formed. In some embodiments, the SNP or RSNP forms a conversion layer that does not have a host matrix. In some embodiments, the SNP or RSNP is embedded in a host matrix such as a polymer or silicone. While making the conversion layer very thin, an excellent combination of optical properties can be presented. Lighting devices that include a conversion layer based on SNP or RSNP exhibit energetically efficient and excellent defined color emission. |