CN111180111A

CN111180111A - Silver nanowire transparent conductive film and flexible OLED

Info

Publication number: CN111180111A
Application number: CN202010038332.4A
Authority: CN
Inventors: 王帅; 甘李; 杨建文; 周明
Original assignee: Chongqing Xiyu New Material Technology Co Ltd
Current assignee: Chongqing Xiyu New Material Technology Co Ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-05-19

Abstract

The invention discloses a silver nanowire transparent conductive film and a flexible OLED (organic light emitting diode), wherein the silver nanowire transparent conductive film consists of a flexible substrate layer, an AgNWs layer, a transparent silver film with a nano-scale thickness, a hot-pressed PEDOT and a PSS (patterned sapphire substrate) modification layer which are sequentially arranged. The flexible OLED is composed of the silver nanowire transparent conductive film, and a hole transport layer, an organic light-emitting material, an electron transport layer, an electron injection layer and a cathode material which are sequentially arranged on the silver nanowire transparent conductive film, wherein the AgNWs layer of the silver nanowire transparent conductive film is used as an anode material. The invention relates to a transparent silver film with nano-scale thickness: the method is beneficial to improving the conductivity, flexibility and mechanical property of the film, and plays an important role in prolonging the service life of the flexible OLED display equipment and stabilizing the performance of the flexible OLED display equipment. The modification layer can reduce the roughness of the silver nanowires in the cross-linking on the surface of the polymer film substrate, is beneficial to increasing the hole injection capability of the OLED, can obviously improve the luminous efficiency and stability of the OLED, is beneficial to reducing the working voltage and prolonging the service life of the OLED.

Description

Silver nanowire transparent conductive film and flexible OLED

Technical Field

The invention belongs to the technical field of nano materials, and particularly relates to a silver nanowire transparent conductive film and a flexible OLED.

Background

The transparent conductive film is a film which can conduct electricity and has high transparency in a visible light range, and mainly comprises a metal film system, an oxide film system, other compound film systems, a polymer film system, a composite film system and the like. However, with the progress of society, the requirements of conductivity and flexibility of OLEDs are also increasing to meet the needs of society. The existing transparent conductive film can not meet the requirements of the OLED on conductivity and flexibility. There is a need for further development of transparent conductive films having higher conductivity and flexibility.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a silver nanowire transparent conductive film and a flexible OLED.

The purpose of the invention is realized as follows:

the key points of the silver nanowire transparent conductive film are as follows: the flexible silver film comprises a flexible substrate layer, an AgNWs layer, a transparent silver film with a nano-scale thickness, hot-pressed PEDOT and a PSS modification layer which are sequentially arranged. And evaporating a layer of transparent silver film with the nanometer thickness on the AgNWs layer in vacuum evaporation equipment.

Preferably, the thickness of the transparent silver thin film is 1 to 10 nm.

Preferably, the thickness of the hot-pressed PEDOT/PSS modified layer is 50-100 nm.

Preferably, the thickness of the AgNWs layer is 50-100 nm.

Preferably, the thickness of the flexible substrate layer is 100 to 130 μm.

Preferably, the flexible substrate layer is a PET substrate layer, a PEN substrate layer, a PDMS substrate layer, or a PI substrate layer.

A flexible OLED is characterized in that: the hole transport layer, the organic light-emitting material, the electron transport layer, the electron injection layer and the cathode material are sequentially arranged on the silver nanowire transparent conductive film, and the AgNWs layer of the silver nanowire transparent conductive film is used as an anode material.

Preferably, the hole transport layer is NPB, 50 to 100 nm.

Preferably, the organic light emitting material and the electron transport layer are Alq3, and the thickness is 50-100 nm.

Preferably, the electron injection layer is LiF, and the thickness thereof is 0.5 to 5 nm.

Has the advantages that:

the invention relates to a silver nanowire transparent conductive film and a flexible OLED, wherein the transparent silver film with the nano-scale thickness comprises the following components in parts by weight: the method is beneficial to improving the conductivity, flexibility and mechanical property of the film, and plays an important role in prolonging the service life of the flexible OLED display equipment and stabilizing the performance of the flexible OLED display equipment. PSS Polymer modification: the method can reduce the roughness of the silver nanowires in the cross-linking on the surface of the polymer film substrate, is beneficial to increasing the hole injection capability of the OLED, can obviously improve the luminous efficiency and stability of the OLED, is beneficial to reducing the working voltage (open-circuit voltage), and prolongs the service life of the OLED.

Drawings

FIG. 1 is a schematic view of a layered arrangement of a silver nanowire transparent conductive film according to the present invention;

FIG. 2 is a schematic view of a layered arrangement of a flexible OLED according to the present invention;

Detailed Description

The invention is further illustrated by the following examples and figures.

Example (b):

a silver nanowire transparent conductive film is composed of a flexible substrate layer, an AgNWs layer, a transparent silver film with a nano-scale thickness, a hot-pressed PEDOT and PSS modification layer which are sequentially arranged. The thickness of the transparent silver film is 1-10 nm. And the thickness of the hot-pressed PEDOT, PSS modified layer is 50-100 nm. The thickness of the AgNWs layer is 50-100 nm. The thickness of the flexible substrate layer is 100-130 mu m. The flexible substrate layer is a PET substrate layer, and a PEN substrate layer, a PDMS substrate layer or a PI substrate layer can also be preferably selected.

The flexible OLED is composed of the silver nanowire transparent conductive film, and a hole transport layer, an organic light-emitting material, an electron transport layer, an electron injection layer and a cathode material which are sequentially arranged on the silver nanowire transparent conductive film, wherein an AgNWs layer of the silver nanowire transparent conductive film is used as an anode material. The hole transport layer is NPB, 50-100 nm. The organic light-emitting material and the electron transport layer are Alq3, and the thickness is 50-100 nm. The electron injection layer is LiF, and the thickness of the electron injection layer is 0.5-5 nm.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. A silver nanowire transparent conductive film is characterized in that: the flexible silver film comprises a flexible substrate layer, an AgNWs layer, a transparent silver film with a nano-scale thickness, hot-pressed PEDOT and a PSS modification layer which are sequentially arranged.

2. The silver nanowire transparent conductive film of claim 1, wherein: the thickness of the transparent silver film is 1-10 nm.

3. The silver nanowire transparent conductive film of claim 1, wherein: and the thickness of the hot-pressed PEDOT, PSS modified layer is 50-100 nm.

4. The silver nanowire transparent conductive film of claim 1, wherein: the thickness of the AgNWs layer is 50-100 nm.

5. The silver nanowire transparent conductive film of claim 3, wherein: the thickness of the flexible substrate layer is 100-130 mu m.

6. The silver nanowire transparent conductive film of claim 1, wherein: the flexible substrate layer is a PET substrate layer, a PEN substrate layer, a PDMS substrate layer or a PI substrate layer.

7. A flexible OLED characterized by: the silver nanowire transparent conductive film comprises the silver nanowire transparent conductive film as claimed in any one of claims 1 to 6, and a hole transport layer, an organic light emitting material, an electron transport layer, an electron injection layer and a cathode material which are sequentially arranged on the silver nanowire transparent conductive film, wherein an AgNWs layer of the silver nanowire transparent conductive film is used as an anode material.

8. A flexible OLED according to claim 1 wherein: the hole transport layer is NPB, 50-100 nm.

9. A flexible OLED according to claim 1 wherein: the organic light-emitting material and the electron transport layer are Alq3, and the thickness is 50-100 nm.

10. A flexible OLED according to claim 1 wherein: the electron injection layer is LiF, and the thickness of the electron injection layer is 0.5-5 nm.