Patent ID: 11139280

Abstract:
The present disclosure relates to a solid-state light-emitting device that comprises at least two light-emitting layers comprising a transition metal dichalcolgenide material with embedded nanoparticles arranged to form an allowable energy level within the bandgap of the transition metal dichalcolgenide layer; the at least two light-emitting layers being sandwiched between two layers of a material with a bandgap larger than the transition metal dichalcolgenide material; and the at least two light-emitting layers being arranged one above the other in a manner such that, light emitted by one of the light-emitting layers travels across the other one of the light-emitting layers; and electrodes arranged to apply a voltage across the two layers of a material with a bandgap larger than the transition metal dichalcolgenide material; wherein, when a voltage within a predetermined range is applied to a pair of electrodes, photons with a predetermined wavelength are emitted by one or more of the at least two light-emitting layers.