Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of manufacturing method of transparent organic light-emitting diode

A manufacturing method and electroluminescence technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of affecting the performance of functional layers, poor surface wettability, unfavorable charge injection, etc., and achieve improved conductivity, high light transmittance and Luminous efficiency, effect of complete transfer reduction

Active Publication Date: 2021-03-26
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solvent used to directly fabricate the top electrode through the solution method will affect the performance of the fabricated functional layer.
However, due to factors such as poor surface wettability, it is difficult to completely transfer graphene, carbon nanotubes and their composite films to devices by dry direct transfer.
Moreover, the work function of graphene and carbon nanotubes does not match the functional layers that have been fabricated, such as electron (hole) injection, and has a high interface barrier, which is not conducive to charge injection, so the performance of the resulting device is poor.

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
  • A kind of manufacturing method of transparent organic light-emitting diode
  • A kind of manufacturing method of transparent organic light-emitting diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, the manufacturing method of the transparent OLED is as follows:

[0034] First, with the ITO transparent conductive film carried on the glass substrate as the bottom anode, functional layers such as the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer, and the electron injection layer are sequentially deposited; then, by spin coating Coating 14nm thick lithium perchlorate / citric acid-orthosilicate gel polymer electrolyte on the surface of the graphene transparent conductive film carried on the electrostatic film substrate, Li + The molar ratio of ion to gel-type polymer matrix is ​​1:4, and the graphene transparent conductive film modified by gel polyelectrolyte is obtained; finally, lithium perchlorate / citric acid-tetraethyl orthosilicate is coagulated by embossing method. The graphene transparent conductive film modified by gel-type polymer electrolyte was transferred to the deposited electron i...

Embodiment 2

[0038] The difference from Example 1 is that the transparent bottom anode used is a graphene transparent conductive film carried on a PEN substrate, and the inorganic metal salt used in the gel-type polymer electrolyte is lithium hexafluorophosphate, Li + The molar ratio of the ion to the gel-type polymer matrix is ​​1:2, and the surface of the graphene transparent conductive film carried on the substrate of the thermal release tape is coated with 10nm thick lithium hexafluorophosphate / citric acid-orthosilicate by spraying Gel type polymer electrolyte. The temperature for transferring the graphene transparent conductive film by imprinting method is 60° C. and the pressure is 0.8 MPa. The structure of the prepared transparent OLED device is: graphene / MoO 3 / TAPC / Bepp 2 :10%Ir(ppy) 2 (acac) / Bepp 2 / Bphen / Gel-type electrolyte modified graphene transparent top cathode with a light transmittance of 79.2% and a power efficiency of 41.3lm·W -1 .

Embodiment 3

[0040] The difference from Example 1 is that the transparent bottom anode used is a carbon nanotube transparent conductive film carried on a PET substrate, and the inorganic metal salt used in the gel polymer electrolyte is lithium carbonate, Li + The molar ratio of ion to gel-type polymer matrix is ​​3:1, and the surface of the graphene transparent conductive film carried on the PDMS substrate is coated with 15nm thick lithium carbonate / citric acid-orthosilicon by dipping-pulling method Ethyl acetate gel-type polymer electrolyte. The temperature for transferring the graphene transparent conductive film by imprinting method is 57° C. and the pressure is 0.6 MPa. The structure of the prepared transparent OLED device is: carbon nanotube / MoO 3 / TAPC / Bepp 2 :10%Ir(ppy) 2 (acac) / Bepp 2 / Bphen / Gel-type electrolyte modified graphene transparent top cathode with a light transmittance of 60.3% and a power efficiency of 39.2lm·W -1 .

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
thicknessaaaaaaaaaa
transmittivityaaaaaaaaaa
transmittivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of manufacturing transparent organic electroluminescent diodes, in particular to a method for manufacturing transparent organic electroluminescent diodes. The method comprises the following steps: (1) using transparent conductive films such as ITO, AZO, graphene, carbon nanotubes, and silver nanowires as transparent bottom electrodes, sequentially depositing a hole (electron) injection layer and a hole (electron) transport layer , light-emitting layer, electron (hole) transport layer, electron (hole) injection layer and other functional layers; The surface is coated with a gel-type polymer electrolyte; (3) the graphene, carbon nanotube or its composite transparent conductive film modified by the gel-type polymer electrolyte is completely transferred to the electron (hole) injection layer by imprinting method as The top electrode, and then obtain a transparent organic light-emitting diode, which has high light transmittance and has broad application prospects in transparent display and other fields.

Description

technical field [0001] The invention relates to the field of manufacturing transparent organic electroluminescent diodes, in particular to a method for manufacturing organic electroluminescent diodes using gel-type polymer electrolyte-modified graphene, carbon nanotubes or their composite transparent conductive films as transparent top electrodes. Background technique [0002] Transparent organic light-emitting diodes (OLEDs), in addition to the inherent lightness, fast response, low operating voltage, wide color gamut, wide viewing angle, high brightness, and low power consumption of OLED devices, can emit light in both positive and negative directions. , non-luminous pixels present a highly transparent state, which can realize virtual reality overlay display, etc., and has broad application prospects in transparent display and other fields, and is an important development direction of the display industry in the future. Since both sides of the transparent OLED can emit lig...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/56
CPCH10K50/816H10K50/828H10K71/00
Inventor 杜金红佟博任文才张鼎冬张伟民成会明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI