Hemispherical shell organic electroluminescence device with two luminescent layers and preparation method for device

A hemispherical shell, dual emission technology, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electric solid-state devices, etc., can solve problems such as hindering the application of phosphorescent OLED devices, annihilation, etc., to widen the collision recombination area, reduce the startup voltage, reduce Annihilation effect
CN102931357AActive
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)

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Abstract

The invention belongs to the field of photoelectric devices, and discloses a hemispherical shell organic electroluminescence device with two luminescent layers and a preparation method for the device. The hemispherical shell organic electroluminescence device with the two luminescent layers comprises a hemispherical shell base, wherein an anode layer, a p-type doped hole transport layer, an electron blocking layer, a blue luminescent layer, a green luminescent layer, a hole blocking layer, an n-type doped electron transport layer and a cathode layer are stacked on the internal surface of the hemispherical shell base in sequence. The hemispherical shell organic electroluminescence device is provided with the two luminescent layers with a subject and object doped structure, and a subject material is a bipolar subject material or a mixed material of hole transport and electron transport subject materials, so that the impact recombination zone of excitons can be expanded, triplet-triplet annihilation is avoided, and the starting voltage of the organic electroluminescence device is reduced.
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Description

technical field

[0001] The invention relates to the field of photoelectric devices, in particular to a hemispherical shell-shaped organic electroluminescent device with double emission layers and a preparation method thereof. Background technique

[0002] In 1987, Tang and VanSlyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence. For the first time, they used the vacuum evaporation technology to combine the aromatic diamine with hole transport property and the 8-hydroxyquinoline aluminum (Alq) with high fluorescence efficiency and electron transport property. 3 ) combined to prepare a double-layer organic electroluminescent device. Under the driving voltage of 10V, the device emits green light with a brightness of up to 1000cd / m 2 , the efficiency reaches 1.5lm / W, and the life span exceeds 1000 hours. This milestone work has made people see a bright prospect for the practical and commercialization of org...

Claims

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