Abstract

An organic light-emitting device comprises a substrate, an anode, a functional layer, a cathode, a packaging layer and a packaging cover which are sequentially laminated. The substrate and the packaging cover form a closed space, and the anode, the functional layer, the cathode and the packaging layer are accommodated in the closed space. The packaging layer sequentially comprises a protection layer, an oxygen, nitrogen and fluorine compound film, an organic barrier layer, a moisture absorption layer and a heat dissipation layer. The oxygen, nitrogen and fluorine compound film is a nitride film doped with oxides and fluorides. The present invention also provides a method for preparing the organic light-emitting device. The method can effectively reduce erosion of moisture and oxygen to the organic light-emitting device, so as to effectively protect the organic functional material and electrodes of the device, and significantly improve the service life of the organic light-emitting device. The method of the present invention is especially suitable for packaging a flexible organic light-emitting device.

IPC Classes  ?

• H05B 33/04 - Sealing arrangements

Abstract

An organic light-emitting device (100) comprises a substrate (10), an anode (20), a functional layer (30), and a cathode (40) which are sequentially laminated. The functional layer (30) comprises a hole transmission layer which has a quantum well structure (301). The quantum well structure (301) comprises potential barrier units (3011) and potential well units (3012) matching with each other, at most one potential well unit (3012)is provided between two adjacent potential barrier units (3011), the potential barrier units (3011) are provided at two ends of the quantum well structure (301), and the HOMO energy level of the potential barrier unit (3011) in the quantum well structure (301) is lower than the HOMO energy level of the potential well unit (3012) that is adjacent to and matches with the potential barrier unit (3011). In the organic light-emitting device (100), the hole transmission layer is designed to have the quantum well structure (301), the potential well depth of the multi-layer quantum well structure (301) is arranged according to gradient, and with decrease of the gradient in the hole transmission direction, the gradient of the potential well depth can be adjusted to improve the hole transmission efficiency, which implements injection balance of carriers. Therefore, the organic light-emitting device (100) has high light-emitting efficiency, and the preparing method is easy and convenient to use.

IPC Classes  ?

• H01L 51/50 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
• H01L 51/56 - Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof

Abstract

An organic light-emitting device and a preparing method thereof, comprising a substrate, an anode, a functional layer, and a cathode which are sequentially laminated. The functional layer comprises a hole transmission layer. The hole transmission layer has a multi-layer structure comprising hole transmission main layers and electron acceptor layers that are alternately superimposed. The hole transmission main layers are provided at two ends of the hole transmission layer, and the HOMO energy level of the hole transmission main layer is higher than the LUMO energy level of the adjacent electron acceptor layer. The structure improves the light-emitting efficiency of the organic light-emitting device.

IPC Classes  ?

• H01L 51/50 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)

Abstract

Disclosed is a preparation method of graphene film. The method comprises the following steps: providing a clean substrate, followed by positively charged processing of the substrate surface; preparing suspension of graphene with negative charges on surface and the suspension of graphene with positive charges on surface respectively; immersing the surface-treated substrate into the suspension of graphene with negative charges on surface for 5-20 minutes, then taking the substrate out, washing, drying, and then immersing it into the suspension of graphene with positive charges on surface for 5-20 minutes, then taking the substrate out, washing, drying, so alternately repeated 10 to 50 times to obtain a graphene film precursor, and finally reducing the graphene film precursor at 500-1000 ℃ to obtain the grapheme film. The preparation method of graphene film provided by this invention is simple, the thickness of the film is able to control easily, and the graphene film provided by this invention is light, strongly conductive, and can be used as collector of super capacitors and lithium-ion batteries.

IPC Classes  ?

• C01B 31/04 - Graphite
• H01M 4/66 - Selection of materials
• H01G 5/015 - Current collectors

Abstract

Provided is a method for preparing polyacrylonitrile-methyl methacrylate gel electrolyte film. The method comprises the following steps: dissolving polyacrylonitrile-methyl methacrylate in an organic solvent with the mass 1 to 3 times as high as that of polyacrylonitrile-methyl methacrylate, adding MCM-48 mesoporous molecular sieves with the mass 0.05 to 0.3 times as high as that of polyacrylonitrile-methyl methacrylate, heating the mixture to 30-50 ℃, stirring them uniformly, and obtaining a slurry containing MCM-48 mesoporous molecular sieve; coating the slurry onto the substrate, vacuum drying, and obtaining a mesoporous molecular sieve MCM-48 modified polyacrylonitrile-methyl methacrylate gel electrolyte film. In addition, the corresponding electrolyte and its preparation method are also provided. The polyacrylonitrile- methyl methacrylate gel electrolyte modified by mesoporous molecular sieve MCM-48 has high electrical conductivity and good security. The preparation method has simple technical process and is environment-friendly.

IPC Classes  ?

• C08J 5/22 - Films, membranes or diaphragms
• C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
• C08L 33/20 - Homopolymers or copolymers of acrylonitrile