Light-emitting device with organic layer doped with photoluminescent material
AssigneeGeneral Electric Company
InventorsAnil Raj Duggal, Alok Mani Srivastava, Steven Jude Duclos
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Abstract
A light-emitting device includes an anode, a cathode, and at least one organic electroluminescent (“EL”) material positioned between the anode and the cathode. Nanoparticles of at least one photoluminescent material are dispersed in the organic EL material. The organic EL material emits a first electromagnetic (“EM”) radiation having a first spectrum in response to an applied electrical field. The PL material absorbs a portion of the first EM radiation emitted by the organic EL material and emits a second EM radiation having a second spectrum. A plurality of the light-emitting devices are arranged on a transparent substrate to provide a panel display or a lighting source.
Claims28
A light-emitting device comprising:
- an anode;
- a cathode;
- and
- at least one organic electroluminescent (“EL”) material disposed between the anode and the cathode, the organic EL material having a plurality of nanoparticles of at least one inorganic photoluminescent (“PL”) material dispersed therein, the organic EL material being capable of emitting a first electromagnetic (“EM”) radiation having a first spectrum in response to an electrical voltage applied through the anode and the cathode, and the inorganic PL material being capable of absorbing a portion of the first EM radiation and emitting a second EM radiation having a second spectrum.
Dependencies are inferred from the claim text.