Dispersion comprising EU2+ doped inorganic luminescent nanoparticles for greenhouse applications and sheet structures and coatings for greenhouses comprising such nanoparticles

Abstract

A luminescent layer is described comprising an Eu2+ doped inorganic luminescent material comprising or consisting essentially of the elements Al and/or Si and the elements O and/or N, the doped inorganic luminescent material converting radiation of the UV region between 200 nm and 400 nm of the solar spectrum into the photosynthetically active radiation (PAR) region (400 nm-700 nm) of the solar spectrum, wherein the Si concentration in the inorganic luminescent material is selected between 0 and 45 at. %, the Al concentration between 0 and 50 at. %, the O concentration between 0 and 70 at. %, the N concentration between 0 and 60 at. % and the Eu2+ between 0.01 and 30 at. %.

Dependencies are inferred from the claim text.