QUANTUM DOTS WITH REDUCED SATURATION QUENCHING

摘要

The invention provides a lighting device (1) comprising (a) a light converter (100) comprising a light receiving face (110); and (b) a solid state light source (10) configured to generate a light source light (11) with a photon flux of at least 10 W/cm2 at the light receiving face (110), wherein the light converter (100) is configured to convert at least part of the light source light (11) into light converter light (101) having a first frequency, wherein the light converter (100) comprises a semiconductor quantum dot (20) in an optical structure (30) selected from a photonic crystal structure (31) and a plasmonic structure (32), wherein the optical structure (30) is configured to increase the photon density of states in the light converter (100) resonant with the first frequency for reducing saturation quenching, and wherein the quantum dot (20) has a quantum efficiency of at least 80%.