摘要:
A solid-state light-emitting element includes a structure body having a property of transmitting visible light and an uneven structure on each of the top side and the bottom side thereof; a high refractive index material layer provided on one surface of the structure body; and a light-emitting body with a refractive index of greater than or equal to 1.6 provided over the high refractive index material layer. One surface of the high refractive index material layer is flatter than the other surface thereof which is in contact with the structure body. The refractive index of the high refractive index material layer is greater than or equal to 1.6. The refractive index of the structure body is greater than 1.0 and less than that of the high refractive index material layer.
摘要:
A solid-state light-emitting element includes a structure body having a property of transmitting visible light and an uneven structure on each of the top side and the bottom side thereof; a high refractive index material layer provided on one surface of the structure body; and a light-emitting body with a refractive index of greater than or equal to 1.6 provided over the high refractive index material layer. One surface of the high refractive index material layer is flatter than the other surface thereof which is in contact with the structure body. The refractive index of the high refractive index material layer is greater than or equal to 1.6. The refractive index of the structure body is greater than 1.0 and less than that of the high refractive index material layer.
摘要:
A lighting device is provided with a structure body which has an inner surface including a region with a negative Fresnel lens shape and a high refractive index material layer which is closely in contact with the inner surface. The high refractive index material layer has a Fresnel lens shape in a region closely in contact with the inner surface, and a plane light-emitting body is provided over the structure body with the high refractive index material layer interposed therebetween. The high refractive index material layer is provided so as to fill at least the negative Fresnel lens shape of the structure body and thus has a surface including the region with the Fresnel lens shape at the interface with the structure body.
摘要:
One object of the present invention is to provide a light emitting element that includes an organic compound and an inorganic compound and has low driving voltage. The light emitting element of the invention includes a plurality of layers between a pair of electrodes, wherein the plurality of layers includes a layer that contains a carbazole derivative represented by a general formula (1) and an inorganic compound exhibiting an electron accepting property with respect to the carbazole derivative. By utilizing this structure, electrons are transported between the carbazole derivative and the inorganic compound and carriers are internally generated, and hence, the driving voltage of the light emitting element can be reduced.
摘要:
An object of the present invention is to decrease the conductivity of a hole-injection layer (or a hole-transport layer) containing molybdenum oxide without decreasing the amount of molybdenum oxide so that crosstalk is prevented from occurring. A light-emitting element includes, between an anode and a cathode, an EL layer including at least a hole-injection layer and a light-emitting layer. In the light-emitting element, the hole-injection layer is provided between the anode and the light-emitting layer, and the hole-injection layer contains molybdenum oxide and an additive. The additive may be an alkali metal, an alkaline earth metal, a substance having a HOMO level of lower than or equal to −5.8 eV, or a substance having a hole mobility of lower than or equal to 10−7 cm2/Vs.
摘要:
Provided is a light-emitting device having a structure in which a high refractive index component is provided between a solid light-emitting element and air, has an uneven structure on a surface in contact with air, and can be reused. The light-emitting device includes a substrate having a refractive index of 1.6 or higher and a light-transmitting property, a solid light-emitting element including a light-emitting region having a refractive index of 1.6 or higher on one surface of the substrate, and a component having a refractive index of 1.6 or higher and a light-transmitting property on the other surface of the substrate, wherein the component includes an uneven structure on a surface in contact with air and is connected to the substrate via a liquid having a refractive index of 1.6 or higher and a light-transmitting property.
摘要:
It is an object to provide a light-emitting device which has high power efficiency and high light-extraction efficiency and emits light uniformly in a plane. It is another object to provide a manufacturing method of the light-emitting device. It is another object to provide a lighting device including the light-emitting device. One embodiment of the present invention provides a light-emitting device which includes: a first electrode provided over a substrate; a layer containing a light-emitting organic compound provided over the first electrode; an island-shaped insulating layer provided over the layer containing the light-emitting organic compound; an island-shaped auxiliary electrode layer provided over the island-shaped insulating layer; and a second electrode having a property of transmitting visible light provided over the layer containing the light-emitting organic compound and the island-shaped auxiliary electrode layer.
摘要:
One feature of the present invention is to provide a buffer layer made of a composite material for a light emitting element including aromatic hydrocarbon containing at least one vinyl skeleton and metal oxide in part of a light emitting substance containing layer, in the light emitting element formed by interposing the light emitting substance containing layer between a pair of electrodes. The composite material for a light emitting element for forming the buffer layer of the present invention has high conductivity and is superior in transparency.
摘要:
One feature of the present invention is to provide a buffer layer made of a composite material for a light emitting element including aromatic hydrocarbon containing at least one vinyl skeleton and metal oxide in part of a light emitting substance containing layer, in the light emitting element formed by interposing the light emitting substance containing layer between a pair of electrodes. The composite material for a light emitting element for forming the buffer layer of the present invention has high conductivity and is superior in transparency.
摘要:
To provide a light-emitting element and a light-emitting device which can be designed and manufactured with redundancy. A light-emitting element of the invention includes a pair of electrode, and a layer containing a light-emissive substance between the pair of electrodes. The layer containing a light-emissive substance includes a layer containing a composite material, and the layer containing a composite material includes an organic compound and an inorganic compound. The concentration ratio of the organic compound to the inorganic compound changes periodically. The layer containing a composite maternal can be changed in electrical characteristics without changing the composition ratio of the organic compound to the inorganic compound in the layer or changing the kind of compounds used for the layer.