A method for producing a light-emitting device

A technology for light-emitting devices and light-emitting layers, which is applied in the field of preparation of dissolvable light-emitting devices, can solve problems such as missing, and achieve the effects of reduced roughness, simple method, and easy operation

Active Publication Date: 2019-08-16
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of dissolvable light-emitting devices is still missing, and about 42 million tons of light-emitting display-related e-waste is generated globally every year.

Method used

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  • A method for producing a light-emitting device
  • A method for producing a light-emitting device
  • A method for producing a light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Ag nanowires synthesized by polyol method were used as device electrode materials. 0.01g of sodium bromide, 0.66g of polyvinylpyrrolidone, 16ml of ethylene glycol solution were added to the reactor, heated by stirring, wherein the stirring speed was 200rpm, and the heating temperature was 165°C, then 0.05g of silver chloride powder was added to react. After 3min, 4ml of silver nitrate ethylene glycol solution containing 0.22g was slowly added, the dropping rate was 0.4ml / min, and cooled to room temperature after 30min. Finally, the obtained solution was centrifuged at 2000 rpm for 30 min, the lower sediment was discarded, and the upper layer was retained, and then 4 times the volume of ethanol of the upper solution was added and centrifuged at 6000 rpm, the supernatant was removed, and the procedure was repeated 3 times to obtain a silver nanowire ethanol solution.

[0038] 2) Configure 30mg / ml polyvinyl alcohol aqueous solution for the preparation of the lower elect...

Embodiment 2

[0049]1) Silver nanowires synthesized by polyol method are used as device electrode materials. Add 0.01g sodium bromide, 0.66g polyvinylpyrrolidone, 16ml ethylene glycol solution in the reactor, heat by stirring, wherein the stirring speed is 200rpm, and the heating temperature is 165°C, then add 0.05g of silver chloride powder, react After 3 minutes, slowly add 4ml of silver nitrate ethylene glycol solution containing 0.22g at a rate of 0.4ml / min, and cool to room temperature after 30 minutes. Finally, by centrifuging the obtained solution at 2000rpm for 30min, discarding the lower precipitate and retaining the upper layer, then adding ethanol with 4 times the volume of the upper layer solution and centrifuging at 6000rpm, removing the supernatant, repeating 3 times, and then obtaining the silver nanowire ethanol solution.

[0050] 2) Configure 60mg / ml polyvinyl alcohol aqueous solution for the preparation of the lower electrode, weigh 1.2g polyvinyl alcohol powder, add 20ml ...

Embodiment 3

[0059] 1) Silver nanowires synthesized by polyol method are used as device electrode materials. Add 0.01g sodium bromide, 0.66g polyvinylpyrrolidone, 16ml ethylene glycol solution in the reactor, heat by stirring, wherein the stirring speed is 200rpm, and the heating temperature is 165°C, then add 0.05g of silver chloride powder, react After 3 minutes, slowly add 4ml of silver nitrate ethylene glycol solution containing 0.22g at a rate of 0.4ml / min, and cool to room temperature after 30 minutes. Finally, by centrifuging the obtained solution at 2000rpm for 30min, discarding the lower precipitate and retaining the upper layer, then adding ethanol with 4 times the volume of the upper layer solution and centrifuging at 6000rpm, removing the supernatant, repeating 3 times, and then obtaining the silver nanowire ethanol solution.

[0060] 2) Configure 20mg / ml polyvinyl alcohol aqueous solution for the preparation of the lower electrode, weigh 0.4g polyvinyl alcohol powder, add 20ml...

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Abstract

The invention discloses a preparation method of a light-emitting device, and belongs to the technical field of dissolvable flexible electronic devices. The light-emitting device includes: a dissolvable lower electrode, a dissolvable light-emitting functional layer and a dissolvable lower electrode. Specifically, silver nanowire-polyvinyl alcohol is used as the lower electrode, and the upper layer of the lower electrode is a fluorescent powder light-emitting functional layer and a silver nanowire-polyvinylpyrrolidone upper electrode. The present invention adopts a sandwich light-emitting device structure in which a layer of light-emitting layers is added to the upper and lower electrodes, and adopts a full-solution method to prepare the device without requiring large-scale equipment such as high-vacuum evaporation magnetron sputtering, and the preparation process is simple and low in cost. The soluble device has the advantages of stable light emission, low energy consumption, recyclability, environmental protection and the like.

Description

technical field [0001] The present invention relates to the technical field of dissolvable flexible electronic devices, in particular to a preparation method of a dissolvable light-emitting device. [0002] technical background [0003] Currently, e-waste is ubiquitous and is a global problem. E-waste refers to various forms of electronic and electrical equipment, such as televisions, mobile phones, computers, etc., that are discarded at the end of their useful life. With the increasing demand for high performance of consumer electronic products and the gradual shortening of their service life, e-waste is growing rapidly. However, at present, most electronic products are made of non-degradable and even toxic materials, which pose a huge threat to the ecological environment and human health. At the same time, most of them still use landfill, incineration, acid treatment and other methods to dispose of electronic devices, which will produce a large amount of toxic substances ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H01L51/52
CPCH10K50/805H10K71/00
Inventor 刘举庆陈营营黄维卢航丁亚梅
Owner NANJING TECH UNIV
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