Light-emitting device capable of being circularly prepared and preparation method

A light-emitting device, recycling preparation technology, applied in the manufacture/processing of organic light-emitting devices, organic light-emitting devices, semiconductor/solid-state device manufacturing, etc., can solve the problems of lack of research on the recycling of electroluminescent devices, and achieve rich raw materials and methods Simplicity and the effect of reducing the production cost

Inactive Publication Date: 2020-05-08
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, research on the recycling of electroluminescent devices is still lacking

Method used

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  • Light-emitting device capable of being circularly prepared and preparation method
  • Light-emitting device capable of being circularly prepared and preparation method
  • Light-emitting device capable of being circularly prepared and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 Shown is a structure diagram of a light-emitting thin film device, which includes a polymer substrate 1 , a bottom electrode 2 , a light-emitting functional layer 3 , a top electrode 4 , and an insulating polymer protective layer 5 .

[0044] The polymer substrate 1 is a transparent or translucent non-water-soluble insulating polymer; the bottom electrode 2 is a silver nanowire conductive film; the light-emitting functional layer 3 is a mixture of phosphor powder and a transparent water-soluble insulating polymer or a translucent water-soluble insulating polymer compound; the top electrode 4 is a silver nanowire conductive film; the insulating encapsulation layer 5 is a transparent or translucent non-water-soluble insulating polymer.

[0045] The top and bottom electrodes are both silver nanowire conductive films, the sheet resistance thereof is 1Ω / sq-1000Ω / sq, and the light transmittance is 40%-100%. The average length of the silver wires in the silve...

Embodiment 2

[0058] Such as figure 1 Shown is a structure diagram of a light-emitting thin film device, which includes a polymer substrate 1 , a bottom electrode 2 , a light-emitting functional layer 3 , a top electrode 4 , and an insulating polymer protective layer 5 .

[0059] The polymer substrate 1 is a transparent or translucent non-water-soluble insulating polymer; the bottom electrode 2 is a silver nanowire conductive film; the light-emitting functional layer 3 is a mixture of phosphor powder and a transparent water-soluble insulating polymer or a translucent water-soluble insulating polymer compound; the top electrode 4 is a silver nanowire conductive film; the insulating encapsulation layer 5 is a transparent or translucent non-water-soluble insulating polymer.

[0060] The average length of the silver nanowires used in the preparation method of the light-emitting device of this embodiment is 20 μm.

[0061] 1) Preparation of the top electrode: Spray silver nanowire ethanol solut...

Embodiment 3

[0067] Such as figure 1 Shown is a structure diagram of a light-emitting thin film device, which includes a polymer substrate 1 , a bottom electrode 2 , a light-emitting functional layer 3 , a top electrode 4 , and an insulating polymer protective layer 5 .

[0068] The polymer substrate 1 is a transparent or translucent non-water-soluble insulating polymer; the bottom electrode 2 is a silver nanowire conductive film; the light-emitting functional layer 3 is a mixture of phosphor powder and a transparent water-soluble insulating polymer or a translucent water-soluble insulating polymer compound; the top electrode 4 is a silver nanowire conductive film; the insulating encapsulation layer 5 is a transparent or translucent non-water-soluble insulating polymer.

[0069] In the preparation method of the light-emitting device in this example, the average length of silver nanowires is 30 μm.

[0070] 1) Preparation of the top electrode: Spray silver nanowire ethanol solution on the ...

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Abstract

The invention discloses a light-emitting device capable of being circularly prepared and a preparation method. The light emitting device includes an insoluble bottom electrode, a soluble intermediatelight emitting layer, and an insoluble top electrode. Specifically, a non-water-soluble polymer-silver nanowire composite film is adopted as a bottom electrode, and the surface of the bottom electrodeis coated with a soluble fluorescent powder light-emitting functional layer and an insoluble polymer-silver nanowire composite film top electrode. The light-emitting functional layer is mingled in the upper electrode and the lower electrode to form the sandwich structure device, the light-emitting device has the advantages of being simple in structure, prepared through an all-solution method, environmentally friendly, low in cost and the like; and meanwhile the device has the advantages of being capable of being circularly machined, good in mechanical flexibility, stable in light emitting, multi-color in light emitting and the like and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of flexible electronic devices, in particular to a preparation method of a recyclable light-emitting device. Background technique [0002] In this era of rapid information development, people's demand for electronic products is increasing day by day. At the same time, electronic product updates and iterations are becoming more frequent. Such a large number of electronic products has brought about a serious global problem-the problem of electronic waste. . However, most of the current methods of dealing with e-waste still use landfill, incineration, acid treatment, etc. These methods not only fail to solve the problem of e-waste fundamentally, but also pose a greater threat to the environment. [0003] At present, one of the better ways to solve the problem of electronic waste is to develop transient electronics, that is, electronic products can be naturally degraded under certain conditions after they are s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/52H01L51/56
CPCH10K85/00H10K50/80H10K50/11H10K71/00
Inventor 刘举庆田志辉叶腾阳
Owner NANJING UNIV OF TECH
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