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Method for preparing ultrathin composite metal electrode with micro-nano grating structure using thermal nanoimprint and application

A technology of thermal nanoimprinting and grating structure, which is applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of device luminous efficiency reduction, uneven electrode thickness, etc., to improve device efficiency, ensure film uniformity, and ensure The effect of ultra-thin characteristics

Active Publication Date: 2019-07-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problem faced by these methods is that the thickness of the prepared electrode is not uniform, which leads to a decrease in the luminous efficiency of the device.

Method used

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  • Method for preparing ultrathin composite metal electrode with micro-nano grating structure using thermal nanoimprint and application
  • Method for preparing ultrathin composite metal electrode with micro-nano grating structure using thermal nanoimprint and application
  • Method for preparing ultrathin composite metal electrode with micro-nano grating structure using thermal nanoimprint and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Fabrication of ultrathin silver-gold composite electrodes with micro-nano grating structure by thermal nanoimprinting.

[0031] First use the vacuum evaporation method to obtain a high-quality ultra-thin silver-gold composite film with uniform thickness, and use a nano-imprint machine to directly imprint the pre-evaporated ultra-thin silver-gold composite film to obtain a uniform thickness, The patterned high-quality ultra-thin composite metal electrode with a relatively smooth surface significantly improves the conductivity of the ultra-thin composite metal electrode.

[0032] The ultra-thin silver-gold composite electrode with micro-nano grating structure is prepared by thermal nanoimprinting, and the specific steps are as follows:

[0033] (1) Preparation of PDMS template pouring: First, mix PDMS (polydimethylsiloxane) and curing agent (Dow Corning DOWCORNING) at a mass ratio of 10:1, fully stir and centrifuge, and the centrifugal speed used is 9000r / min , the centr...

Embodiment 2

[0040] Fabrication of organic light-emitting diodes using ultra-thin silver-gold composite electrodes with micro-nano grating structure.

[0041] The ultra-thin silver-gold composite film with a micro-nano grating structure provided by the present invention has the characteristics of uniform thickness and high transmittance, and can be used as a high-quality ultra-thin composite metal electrode for preparing organic light-emitting diodes, thereby significantly improving light-emitting devices The light extraction rate and luminous efficiency.

[0042] The organic light-emitting diode is prepared by using the ultra-thin silver-gold composite electrode with a micro-nano grating structure, and the specific steps are as follows:

[0043] (1), PDMS formwork pouring preparation: same as embodiment 1.

[0044] (2) Cleaning and modification of the imprinted substrate: the same as in Example 1.

[0045] (3) Evaporation and thermal nanoimprinting of ultra-thin composite metal electrod...

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Abstract

The present invention discloses a method for preparing an ultrathin composite metal electrode with a micro-nano grating structure using thermal nanoimprint and an application, and belongs to the technical field of organic light-emitting devices. The invention directly performs nanoimprint to an evaporated ultrathin composite metal film with a prefabricated template with a micro-nano grating inverse structure, and a high-quality ultrathin composite metal electrode with the micro-nano grating structure and a uniform thickness can be obtained. Through direct thermal nanoimprint on the ultrathin composite metal electrode, the overall film uniformity and ultrathin characteristic of the patterned ultrathin composite metal electrode can be guaranteed at the same time, thereby the resistance of the ultrathin metal electrode is effectively reduced and the efficiency of the device is improved. The ultrathin composite metal electrode with the micro-nano grating structure prepared by the thermal nanoimprint has the higher transmittance, thereby the light extraction rate and luminous efficiency of the device are improved.

Description

technical field [0001] The invention belongs to the field of organic light-emitting devices, and in particular relates to preparing an ultra-thin composite metal film into an ultra-thin metal composite electrode with a micro-nano grating structure by means of thermal nanoimprinting. The ultra-thin metal electrode thus obtained has significantly improved transmittance and electrical conductivity, thereby achieving a substantial increase in device efficiency. [0002] technical background [0003] ITO (Indium Tin Oxide Conductive Glass) has the advantages of high transmittance and high conductivity. It is a commonly used transparent electrode material and is widely used in the research and development of organic light-emitting devices. However, ITO electrodes have problems such as low lifetime and loss of luminous efficiency caused by interlayer waveguide modes. Therefore, many alternative electrode materials for ITO electrodes have been proposed, including conductive polymers...

Claims

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Application Information

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IPC IPC(8): H01L51/56H01L51/52
CPCH10K50/805H10K50/816H10K50/85H10K71/00
Inventor 孙洪波马驰冯晶
Owner JILIN UNIV
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