Method for processing pedot-pss, quantum dot light-emitting diode and display device

A PEDOT-PSS and display device technology, applied in the field of conductive materials, can solve the problems of low conductivity and limit the improvement of the performance of light-emitting devices, and achieve the effect of improving conductivity

Active Publication Date: 2022-07-29
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the intrinsic conductivity of PEDOT-PSS is low, usually less than 1S / cm, which limits the improvement of the performance of light-emitting devices made of it.

Method used

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  • Method for processing pedot-pss, quantum dot light-emitting diode and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 0.1mol / LHgCl 2 Mix 1ml of the solution with 99ml of PEDOT-PSS solution to obtain a high-conductivity mixed solution; filter the high-conductivity mixed solution with a 0.45um pore size filter to obtain the filtrate; drop the filtrate on the pre-cleaned dry PET substrate, spin-coat, Then bake at 150 °C for 30 min to obtain a PEDOT-PSS high-conductivity film.

[0064] Performance check:

[0065] The conductivity of the above-mentioned PEDOT-PSS high-conductivity film was measured by a four-probe measuring instrument to be 612.87 S / cm. Compared with the comparative example, the conductivity was significantly increased, indicating that the conductivity of the PEDOT-PSS treated by the method proposed in the present invention was has been significantly improved;

[0066] The light transmittance at 300 nm of the above PEDOT-PSS high-conductivity film was measured by an ultraviolet spectrophotometer to be 80%, and there was no significant change compared with the comparative ...

Embodiment 2

[0069] 1mol / LSbCl 3 Mix 30ml of the solution with 70ml of the PEDOT-PSS solution to obtain a high-conductivity mixed solution; filter the high-conductivity mixed solution with a 0.45um pore size filter to obtain the filtrate; drop the filtrate on the pre-cleaned dry PET substrate, spin-coat, Then bake at 150 °C for 30 min to obtain a PEDOT-PSS high-conductivity film.

[0070] Performance check:

[0071] The conductivity of the above PEDOT-PSS high-conductivity film was measured by a four-point probe measuring instrument to be 609.12 S / cm. Compared with the comparative example, the conductivity was significantly increased, indicating that the conductivity of the PEDOT-PSS treated by the method proposed in the present invention was has been significantly improved;

[0072] The light transmittance at 300 nm of the above PEDOT-PSS high-conductivity film was measured by an ultraviolet spectrophotometer to be 79%, and there was no significant change compared with the comparative e...

Embodiment 3

[0075] 0.6mol / LINCl 3 Mix 15ml of the solution with 85ml of PEDOT-PSS solution to obtain a high-conductivity mixed solution; filter the high-conductivity mixed solution with a 0.45um pore size filter to obtain the filtrate; drop the filtrate on the pre-cleaned dry PET substrate, spin-coat, Then bake at 110~200℃ for 30min to obtain PEDOT-PSS high conductivity film.

[0076] Performance check:

[0077] The electrical conductivity of the above PEDOT-PSS high-conductivity film was measured by a four-probe measuring instrument to be 597.26 S / cm. Compared with the comparative example, the electrical conductivity was significantly increased, indicating that the conductivity of the PEDOT-PSS treated by the method proposed in the present invention was has been significantly improved;

[0078] The light transmittance at 300 nm of the above PEDOT-PSS high-conductivity film was measured by an ultraviolet spectrophotometer to be 81%, and there was no significant change compared with the ...

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Abstract

The invention discloses a method for processing PEDOT-PSS, a quantum dot light-emitting diode and a display device, and relates to the technical field of conductive materials. The method for treating PEDOT-PSS comprises the steps of: treating the PEDOT-PSS material with a salt solution to phase-separate the PEDOT and PSS, wherein the salt solution contains cations with a positive softness parameter. The present invention aims to provide a method for improving the electrical conductivity of PEDOT-PSS.

Description

technical field [0001] The invention relates to the technical field of conductive materials, in particular to a method for processing PEDOT-PSS, a quantum dot light emitting diode and a display device. Background technique [0002] At present, flexible, foldable, wearable, and transparent electronic products are increasingly attracting people's attention. Due to their good light transmittance and flexibility, conductive polymer materials have become an ideal choice to replace brittle ITO transparent electrodes. [0003] Polyethylenedioxythiophene (PEDOT) and polybenzenesulfonate (PSS) can be dissolved in water by mixing in a certain proportion, and a uniformly dispersed PEDOT-PSS solution can be formed. The PEDOT-PSS film made of PEDOT-PSS solution has good flexibility, stability, and high transparency in the visible light range. Moreover, the work function of PEDOT-PSS is generally 5.0 ~ 5.1eV, which is very conducive to injection. hole. Based on its good performance, PED...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J7/12C08J7/00C08L65/00C08L25/18H01L51/50H01L51/52H01L27/32
CPCC08J5/18C08J7/12C08J7/00C08J2365/00C08J2425/18C08J2465/00C08J2325/18H10K59/00H10K50/115H10K50/805
Inventor 苏亮
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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