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Light-emitting electrochemical cell and preparation method thereof

A technology of light-emitting electrochemical cells and light-emitting materials, which is applied in the field of preparation of light-emitting electrochemical cells, can solve the problems of poor stability and low light-emitting performance, and achieve the effects of improving device performance, reducing crystallinity, and improving phase separation of thin films

Active Publication Date: 2019-09-20
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a light-emitting electrochemical cell and its preparation method to solve the problems of low luminescence performance and poor stability of the light-emitting electrochemical cell device prepared by the conventional printing process existing in the prior art

Method used

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  • Light-emitting electrochemical cell and preparation method thereof
  • Light-emitting electrochemical cell and preparation method thereof
  • Light-emitting electrochemical cell and preparation method thereof

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Embodiment 1

[0024] The first step: dissolve polyethylene oxide, ethoxylated trimethylolpropane triacrylate, lithium trifluoromethanesulfonate, and carbon quantum dots in a binary solvent with a volume ratio of cyclohexanone and tetrahydrofuran of 3:1 In, the solution concentration is 10mgmL -1 . Subsequently, 0.2 mL of polyethylene oxide solution prepared above, 1 mL of ethoxylated trimethylolpropane triacrylate solution, 0.2 mL of lithium trifluoromethanesulfonate solution, and 0.1 mL of carbon quantum dot solution were added to 10 mg of poly[ 2-Methoxy-5-(2'-ethyl-ethoxy)-1,4-styrene luminescent material was further dissolved with 0.5 mL of the above-mentioned binary solvent, stirred overnight at 80°C with 0.22 um's organic filter to form printing ink.

[0025] Step 2: The indium tin oxide substrate is subjected to plasma treatment for 5 minutes, and a 40nm thick polyethylene dioxythiophene film is printed on it, at a printing speed of 20m s -1 Under certain conditions, the ink was p...

Embodiment 2

[0029] The first step: dissolve polyethylene oxide, ethoxylated trimethylolpropane triacrylate, lithium trifluoromethanesulfonate, and carbon quantum dots in a binary solvent with a volume ratio of cyclohexanone and tetrahydrofuran of 3:1 In, the solution concentration is 10mg mL -1 . Subsequently, 0.2 mL of polyethylene oxide solution prepared above, 1 mL of ethoxylated trimethylolpropane triacrylate solution, 0.2 mL of lithium trifluoromethanesulfonate solution, and 0.01 mL of carbon quantum dot solution were added to 10 mg of poly[ 2-methoxy-5-(2'-ethyl-ethoxy)-1,4-styrene luminescent material was further dissolved with 0.59 mL of the above-mentioned binary solvent, stirred overnight at 80°C with 0.22 um's organic filter to form printing ink.

[0030] Step 2: The indium tin oxide substrate is subjected to plasma treatment for 5 minutes, and a 40nm thick polyethylene dioxythiophene film is printed on it, at a printing speed of 20m s -1 Under certain conditions, the ink wa...

Embodiment 3

[0034] The first step: dissolve polyethylene oxide, ethoxylated trimethylolpropane triacrylate, lithium trifluoromethanesulfonate, and carbon quantum dots in a binary solvent with a volume ratio of cyclohexanone and tetrahydrofuran of 3:1 In, the solution concentration is 10mg mL -1 . Subsequently, 0.2 mL of polyethylene oxide solution prepared above, 1 mL of ethoxylated trimethylolpropane triacrylate solution, 0.2 mL of lithium trifluoromethanesulfonate solution, and 0.1 mL of carbon quantum dot solution were added to 10 mg of poly[ {2,5-bis(3',7'-dimethyloctyloxy)-1,4-phenylethynyl}-co-{3-(4'-(3",7"-dimethyloctyloxy base)phenyl)-1,4-phenylacetylene}-co-{3-(3'-(3",7"-dimethyloctyloxy)phenyl)-1,4-phenylacetylene}] luminescence The material was further dissolved with 0.5mL of the above-mentioned binary solvent, stirred overnight at 80°C and then filtered with a 0.22um organic filter to form a printing ink.

[0035] Step 2: The indium tin oxide substrate is subjected to plasm...

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Abstract

The invention discloses a light-emitting electrochemical cell and a preparation method thereof. The light-emitting electrochemical cell comprises indium tin oxide conductive glass, a polyethylene dioxygen thiophene layer, a light-emitting active layer and a metal electrode from bottom to top in sequence. The preparation method comprises the following steps that the light-emitting material, polyoxyethylene, ethoxylated trimethylolpropane triacrylate and lithium trifluoromethanesulfonate, and functional nanoparticles are mixed and dissolved in a solvent to prepare ink; and the ink is printed into a film through a microphone rod on the indium tin oxide substrate covered with a polyethylene dioxygen thiophene film, and annealing treatment is carried out; and the substrate is cooled to room temperature, the substrate is transferred into a vacuum chamber of a metal vapor deposition system, and an aluminum electrode is evaporated. The presence of the nanoparticles inhibits crystallization of the electrolyte in the active layer, and improves the phase separation condition of the active layer, and the surface roughness of the thin film is reduced by orderly guiding the stacking of the polymer luminescent materials, so that the prepared light-emitting electrochemical cell is high in carrier mobility and excellent in photoelectric property.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, and relates to a preparation method of a light-emitting electrochemical cell. Background technique [0002] With its advantages of high efficiency and low cost, printed electronics technology has broad application prospects in information, energy, medical, national defense and other fields. At present, this technology cannot be well applied in the fields of lighting and display, mainly because the film prepared by printing has high roughness and poor uniformity, and the prepared device has low luminous performance and poor stability. Contents of the invention [0003] The purpose of the present invention is to provide a light-emitting electrochemical cell and its preparation method to solve the problems of low light-emitting performance and poor stability of the light-emitting electrochemical cell device prepared by the conventional printing process in the prior art. [0004] T...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56
CPCH10K71/13H10K71/40H10K50/135H10K71/00
Inventor 赖文勇俞梦捷周璐张嘉玲黄维
Owner NANJING UNIV OF POSTS & TELECOMM
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