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Low-voltage-driven flexible light-emitting device and preparation method and application thereof

A technology for low-voltage driving and light-emitting devices, applied in the field of materials, can solve the problems of driving voltage process optimization, potential safety hazards for users, and high driving voltage, and achieve the effects of improving use safety, improving overall strength, and reducing driving voltage.

Pending Publication Date: 2021-06-29
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible light-emitting device improves the bonding force of each layer through the formation of aluminum nitride film layer, but the process is complicated, and the process is not optimized for reducing the driving voltage
[0007] The driving voltage of the flexible light-emitting device in the prior art is relatively high, which will cause safety hazards to the wearer

Method used

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  • Low-voltage-driven flexible light-emitting device and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] This embodiment provides a figure 1 The low-voltage driven flexible light-emitting device shown includes a flexible base layer 1 and a light-emitting layer 2 disposed on the flexible base layer 1; conductive silver layers are respectively provided on both sides of the light-emitting layer 2 3.

[0069] The preparation method of the flexible light-emitting device driven by the low voltage comprises the following steps:

[0070] (1) Spray silver nanowire solution at 0.6 MPa on the hydrophobic glass, dry at 20°C for 30 minutes, and complete the setting of the conductive silver layer 3;

[0071] (2) Spin-coat the base solution on the surface of the conductive silver layer 3 obtained in step (1), dry at 120° C. for 30 minutes, and complete the setting of the flexible base layer 1; the spin-coating speed is 600 r / min, and the spin-coating time is 60 s;

[0072] (3) The conductive silver layer 3 is spin-coated with the luminescent layer slurry on the surface of the flexible ...

Embodiment 2

[0081] This embodiment provides a figure 1 The low-voltage driven flexible light-emitting device shown includes a flexible base layer 1 and a light-emitting layer 2 disposed on the flexible base layer 1; conductive silver layers are respectively provided on both sides of the light-emitting layer 2 3.

[0082] The preparation method of the flexible light-emitting device driven by the low voltage comprises the following steps:

[0083] (1) Spray silver nanowire solution at 0.5MPa on hydrophobic glass, dry at 10°C for 40 minutes, and complete the setting of conductive silver layer 3;

[0084](2) Spin-coat the base solution on the surface of the conductive silver layer 3 obtained in step (1), dry at 110° C. for 40 min, and complete the setting of the flexible base layer 1; the spin-coating speed is 500 r / min, and the spin-coating time is 80 s;

[0085] (3) The conductive silver layer 3 is spin-coated with the luminescent layer slurry on the surface of the flexible base layer 1, ...

Embodiment 3

[0094] This embodiment provides a figure 1 The low-voltage driven flexible light-emitting device shown includes a flexible base layer 1 and a light-emitting layer 2 disposed on the flexible base layer 1; conductive silver layers are respectively provided on both sides of the light-emitting layer 2 3.

[0095] The preparation method of the flexible light-emitting device driven by the low voltage comprises the following steps:

[0096] (1) Spray silver nanowire solution at 0.8 MPa on the hydrophobic glass, dry at 30°C for 20 minutes, and complete the setting of the conductive silver layer 3;

[0097] (2) Spin-coat the substrate solution on the surface of the conductive silver layer 3 obtained in step (1), dry at 130°C for 20min, and complete the setting of the flexible substrate layer 1; the spin-coating speed is 800r / min, and the spin-coating time is 50s;

[0098] (3) The conductive silver layer 3 is spin-coated with the luminescent layer slurry on the surface of the flexible...

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Abstract

The invention provides a low-voltage-driven flexible light-emitting device and a preparation method and application thereof. The preparation method comprises the following steps of: (1) spraying a silver nanowire solution on hydrophobic glass, and drying to complete the setting of a conductive silver layer; (2) spin-coating a substrate solution on the surface of the conductive silver layer obtained in the step (1), and drying to complete the arrangement of a flexible substrate layer; (3) spin-coating luminous layer slurry on the surface of the conductive silver layer relative to the flexible substrate layer, and performing heat treatment to obtain a luminous layer; and (4) spraying the silver nanowire solution on the surface of the luminescent layer obtained in the step (3), and drying to complete the setting of the conductive silver layer. According to the flexible light-emitting device prepared by the invention, the driving voltage can be greatly reduced under the condition of the same light-emitting brightness, and the safety of the flexible light-emitting device when the flexible light-emitting device is applied to wearable equipment is ensured.

Description

technical field [0001] The invention belongs to the field of material technology, and relates to a light-emitting device, in particular to a low-voltage driven flexible light-emitting device and a preparation method and application thereof. Background technique [0002] With the development of science and technology, flexible wearable devices are gradually changing our lives. Flexible wearable devices have the advantages of being able to follow the skin, have good bending and weather resistance, and have a long service life. [0003] Electroluminescence is a physical phenomenon in which an electric field is generated by applying a voltage to two electrodes, and the electrons excited by the electric field hit the luminescent center, which causes the transition, change, and recombination of electrons between energy levels to cause luminescence. CN109301091A discloses a flexible electroluminescent device and its preparation method, its structure includes a flexible substrate, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K50/805H10K50/11
Inventor 李栋婵李策周赟磊谷少强杨森楠
Owner HEBEI UNIV OF TECH
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