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Flexible device having both electrochromic and electroluminescent functions, and preparation method thereof

An electrochromic and flexible device technology, which is applied in the fields of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of low color purity of luminescent materials, poor device stability, and reduced device life, etc., to achieve excellent luminescence Efficiency, solution to poor reliability, effect of excellent electrochromic performance

Pending Publication Date: 2019-01-22
ZHONGSHAN TIAN JIA PAPER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single electroluminescent device itself also has many shortcomings. The light-emitting layer used is affected by water and oxygen in the air, and the stability of the device is poor; when the device is working at a high voltage, the heat of the device will cause the dissolution of the light-emitting layer and reduce the life of the device; The color purity of most luminescent materials is not high, and the luminous efficiency is poor

Method used

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  • Flexible device having both electrochromic and electroluminescent functions, and preparation method thereof
  • Flexible device having both electrochromic and electroluminescent functions, and preparation method thereof

Examples

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preparation example Construction

[0051] The preparation process of the above-mentioned flexible device is as follows:

[0052] 1) Preparation of transparent conductive electrodes: spraying a nano-silver grid layer on a transparent non-conductive flexible substrate by inkjet printing, and drying to obtain a transparent conductive electrode;

[0053] 2) Prepare the electrochromic layer by one-step reduction method:

[0054] a. Preparation of PEDOT:PSS / Ag electrochromic material: Add an excess of 0.01mol EDOT monomer to an aqueous solution containing PSS at a concentration of 0.5 to 1.5%, and stir vigorously to dissolve it. Adding an excess of EDOT monomer can fully Ag + Reduction to Ag; then silver nitrate was added dropwise to the EDOT / PSS aqueous solution until its concentration was 10mmol / L; after 12 hours of reaction, it was repeatedly washed with a large amount of deionized water to obtain the PEDOT:PSS / Ag electrochromic material;

[0055] b. Preparation of electrochromic coatings doped with electrolytes...

Embodiment 1

[0062] A flexible device with both electrochromic and electroluminescent functions, including a transparent conductive electrode 1 , an electrochromic layer 2 , an electroluminescent layer 3 , a dielectric layer 4 , an insulating layer 5 and a back electrode 6 connected in sequence.

[0063] The preparation process of the above-mentioned flexible device is as follows:

[0064] 1) Preparation of a transparent conductive electrode: spraying a nano-silver grid layer on a transparent non-conductive flexible substrate, and drying to obtain a transparent conductive electrode;

[0065] 2) Prepare the electrochromic layer by one-step reduction method:

[0066] a. Preparation of PEDOT:PSS / Ag electrochromic material: Add an excess of 0.01mol EDOT monomer to an aqueous solution containing PSS at a concentration of 1%, and stir vigorously to dissolve it; then add silver nitrate dropwise to the EDOT / PSS aqueous solution , until its concentration is 10mmol / L; after reacting for 12h, wash r...

Embodiment 2

[0074] A flexible device with both electrochromic and electroluminescent functions, including a transparent conductive electrode 1 , an electrochromic layer 2 , an electroluminescent layer 3 , a dielectric layer 4 , an insulating layer 5 and a back electrode 6 connected in sequence.

[0075] The preparation process of the above-mentioned flexible device is as follows:

[0076] 1) Preparation of a transparent conductive electrode: spraying a nano-silver grid layer on a transparent non-conductive flexible substrate, and drying to obtain a transparent conductive electrode;

[0077] 2) Prepare the electrochromic layer by one-step reduction method:

[0078] a. Preparation of PEDOT:PSS / Ag electrochromic material: Add an excess of 0.01mol EDOT monomer to an aqueous solution containing PSS at a concentration of 1%, and stir vigorously to dissolve it; then add silver nitrate dropwise to the EDOT / PSS aqueous solution , until its concentration is 10mmol / L; after reacting for 12h, wash r...

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Abstract

The invention discloses a flexible device having both electrochromic and electroluminescent functions, and a preparation method thereof, and belongs to the technical field of printed electronics. Theflexible device comprises a transparent conductive electrode, an electrochromic layer, an electroluminescent layer, a dielectric layer, an insulating layer and a back electrode, which are sequentiallyconnected with each other; and the electrochromic layer is made of a polymer electrochromic material doped with electrolyte. The flexible device disclosed by the invention has excellent electrochromic performance and luminous efficiency, improves the reaction speed of the device on the premise of ensuring the high transmittance of the device, reduces the manufacturing cost, solves the problem ofpoor reliability of the liquid electrolyte of the device, has the advantages of simple structure, good safety and reliability, energy saving and environmental protection, and can be widely used in thefields of package, anti-counterfeiting, flexible display, wearable devices and the like.

Description

technical field [0001] The invention relates to the technical field of printed electronics, in particular to a flexible device with both electrochromic and electroluminescent functions and a preparation method thereof. Background technique [0002] Electrochromism (Electrochromism) is a phenomenon in which the material's optical properties (reflectivity, transmittance, absorptivity, etc.) undergo a stable and reversible color change due to oxidation or reduction under the action of a DC voltage. Reversible changes in color and transparency. Electroluminescence is a phenomenon in which materials are excited by corresponding electric energy under the action of an electric field to emit light, which is based on the principle that materials are excited and emit light due to external electrical constraints. This emission is intrinsic to the material used and is characterized by one or more wavelengths and a certain intensity. [0003] Electrochromism can be applied to electroch...

Claims

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Application Information

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IPC IPC(8): G02F1/155G02F1/15G02F1/1333H01L51/52
CPCG02F1/1333G02F1/15G02F1/155H10K50/805H10K50/841
Inventor 朱华杨张进陈挺刘蓉
Owner ZHONGSHAN TIAN JIA PAPER PROD
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