Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic electroluminescence apparatus and preparation method thereof

An electroluminescence device and luminescence technology, which are applied in the direction of organic semiconductor devices, circuits, electrical components, etc., can solve problems such as low luminous efficiency, poor performance of light-emitting devices, and reduced electron injection capabilities

Inactive Publication Date: 2014-07-16
OCEANS KING LIGHTING SCI&TECH CO LTD +2
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the transparent conductive oxide film is used as the cathode, due to its high work function, the electron injection ability to the organic light-emitting layer will be reduced. The electron injection ability is one of the main factors determining the luminous brightness and luminous efficiency of the organic electroluminescent device. Therefore, , lower electron injection ability will lead to poor performance and low luminous efficiency of organic electroluminescent devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic electroluminescence apparatus and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] A method for preparing an organic electroluminescent device, comprising the steps of:

[0079] Place the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen;

[0080] Through thermal evaporation process, in a vacuum of 1.0×10 -4 Under the conditions of Pa and speed of 0.02nm / s, Cu, CuPc, NPB, and DCJTB were sequentially evaporated and doped to Alq according to the doping mass fraction of 8%. 3 The mixed material and BAlq formed in the preparation method respectively prepare the anode, the hole injection layer, the hole transport layer, the light emitting layer and the hole blocking layer;

[0081] Then through the thermal evaporation process, in a vacuum of 1.0×10 -4 Sequential evaporation of Li under the conditions of Pa and speed 0.02nm / s 2 CO 3 According to the doping mass fraction of 10% doped into TPBi to form a mixed ...

Embodiment 2

[0086] A method for preparing an organic electroluminescent device, comprising the steps of:

[0087] Place the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen;

[0088] Through thermal evaporation process, in a vacuum of 1.0×10 -5 Under the conditions of Pa and speed of 0.5nm / s, Au, ZnPc, 2-TNATA, and C545T were sequentially evaporated and doped to Alq according to the doping mass fraction of 20%. 3The mixed material and Bphen formed in the preparation of anode, hole injection layer, hole transport layer, light-emitting layer and hole blocking layer respectively; -5 Sequential evaporation of Cs under the conditions of Pa and speed 0.5nm / s 2 CO 3 Mixed materials, NiO, ReO formed by doping into Bphen according to the doping mass fraction of 2% 3 Prepare the pn junction layer according to the mixed material formed by doping 2% d...

Embodiment 3

[0092] A method for preparing an organic electroluminescent device, comprising the steps of:

[0093] Place the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen;

[0094] Through thermal evaporation process, in a vacuum of 1.0×10 -3 Under the conditions of Pa and speed 0.2nm / s, Pt was evaporated sequentially, F6-TNAP was doped into MeO-TPD according to the doping mass fraction of 5%, and TAPC and NPB were doped into MeO-TPD according to the doping mass fraction of 8%. The mixed material and TPBi formed in Ir(MDQ)2(acac) were used to prepare anode, hole injection layer, hole transport layer, light emitting layer and hole blocking layer respectively; -3 Under the conditions of Pa and speed 0.2nm / s, Rb is evaporated sequentially 2 CO 3 The mixed material formed by doping Bphen according to the doping mass fraction of 20%, TiO 2 、M...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Surface work functionaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides an organic electroluminescence apparatus and a preparation method thereof. In the organic electroluminescence apparatus prepared by using the method, a transparent conductive oxide film is employed as a cathode, a pn junction layer is arranged between an organic luminescence function layer and the cathode, and the pn junction layer comprises a n-type layer, an intermediate layer and a p-type layer which are successively stacked, such that the electron injection capability is improved, and a stable and uniform luminous effect is obtained. The preparation method is simple in process, free from pollution and easy to control, and facilitates industrial production.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence, and in particular relates to an organic electroluminescence device and a preparation method thereof. Background technique [0002] An organic electroluminescent device is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding properties such as ultra-thin, self-luminous, fast response, low power consumption, etc. It is a display technology and light source with great potential, which meets the development trend of mobile communication and information display in the information age, as well as the requirements of green lighting technology. At present, it is the focus of many researchers at home and abroad. [0003] Organic electroluminescent devices have various structures, such as top-emitting light-emitting devices and inverted light-emitting devices. Most of the org...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
CPCH10K71/16H10K85/324H10K85/6572H10K30/865H10K2102/00
Inventor 周明杰王平冯小明钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com