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Light emitting device manufacturing method

A technology for light-emitting devices and light-emitting layers, applied in the field of preparation of dissolvable light-emitting devices, can solve problems such as defects, and achieve the effects of reducing roughness, improving surface flatness, and reducing preparation costs

Active Publication Date: 2018-06-19
NANJING UNIV OF TECH
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 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.

[0037] 2) Configure 30mg / ml polyvinyl alcohol aqueous solution for the preparation of the lower electrode, weigh 0.6g polyvinyl alcohol, add 20ml deioni...

Embodiment 2

[0048]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.

[0049] 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

[0057] 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.

[0058] 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 light emitting device manufacturing method, which belongs to the technical field of dissolvable flexible electronic devices. A light emitting device comprises 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. A phosphor light emitting functional layer and a silver nanowire-polyvinyl pyrrolidone upper electrode are on the upper layer of the lower electrode. According to the invention, the sandwich light emitting device structureof a light emitting layer is added between upper and lower electrodes; the device is prepared by an all-solution method without large-scale equipment such as high vacuum evaporation magnetron sputtering; the preparation process is simple, and the cost is low; and the dissolvable device has the advantages of stable light emission, low energy consumption, recyclability, environmental protection andthe like.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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 UNIV OF TECH
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