Abstract:
PROBLEM TO BE SOLVED: To provide a composition useful for altering the wavelength of visible or invisible light.SOLUTION: The composition comprises a solid host material and quantum confined semiconductor nanoparticles, and the nanoparticles are included in the composition in amount in the range from about 0.001 to about 15 weight percent on the basis of the weight of the host material. The composition can further include scatterers. An optical component including a waveguide component and quantum confined semiconductor nanoparticles is also disclosed. A device including an optical component is disclosed. A system including an optical component including a waveguide component and quantum confined semiconductor nanoparticles and a light source optically coupled to the waveguide component is also disclosed. A decal, kit, ink composition, and method are also disclosed. A TFEL including quantum confined semiconductor nanoparticles on a surface thereof is also disclosed.
Abstract:
PROBLEM TO BE SOLVED: To provide a device comprising an organic layer having a novel configuration with improved efficiency and a method of manufacturing the same.SOLUTION: There are provided a device comprising a layer including a semiconductor nanocrystal and a doped organic material, and a method of manufacturing a device arranged on a substrate, electrically connected to at least one semiconductor nanocrystal, and incorporating a layer including a doped organic material.
Abstract:
A composition comprising: a host material; a quantum dot material; and a first phosphorescent material, wherein the lowest triplet energy state of said host material is at a higher energy than a lowest triplet excited state of said phosphorescent material wherein the emission energy level of said quantum dot is at a higher energy that the lowest triplet excited state of said phosphorescent material. Also disclosed is a light emitting device comprising the above composition. The composition may comprise one or more further quantum dot materials and/or one or more further phosphorescent materials. The composition may comprise a second phosphorescent material which has a lower emissive energy state than that of the first phosphorescent material, wherein the first material may be a green light emitting material and the second material may be a red light emitting material.
Abstract:
A method of forming a light-emitting device, the method comprising the steps of: forming a quantum dot light-emitting layer 105 comprising light-emitting quantum dots over an electrode 103 for injecting charge carriers of a first type; forming an adjacent layer 107 on the quantum dot light-emitting layer by depositing onto the quantum dot light-emitting layer a formulation comprising one or more solvents and one or more materials selected from charge-transporting and light emitting materials, and evaporating the one or more solvents; and forming an electrode 109 for injecting charge carriers of a second type over the adjacent layer. The first electrode 103 may comprise an anode and the second electrode 109 may comprise a cathode. A hole injection layer and/or a hole transport layer may be provided between the anode 103 and the quantum dot light emitting layer 105. The light emitting device may comprise an organic light-emitting material, wherein the material may be a phosphorescent organic light emitting material.