A poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod, its preparation method and its application

A technology of ethylenedioxythiophene and tungsten oxide nanowires, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of unfavorable photogenerated hole collection and transmission, and improve energy conversion Efficiency, simple process steps, and the effect of improving efficiency and life

Active Publication Date: 2021-08-06
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, WO X The work function is about 4.6-4.8eV, which does not match the valence band energy level (5.3-5.4eV) of perovskite, which is not conducive to the collection and transmission of photogenerated holes, so it is not an ideal hole transport material.

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  • A poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod, its preparation method and its application
  • A poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod, its preparation method and its application
  • A poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod, its preparation method and its application

Examples

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Embodiment 1

[0027] This embodiment provides a poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod (abbreviated as WO X @PEDOT nanorod) and preparation method thereof, specifically:

[0028] (a) Preparation of WO X Nanowires (reference: Journal of Materials Chemistry A, 2013, 1, 6125-6129): WCl 6 Dissolve in ethanol to prepare a solution with a concentration of 12.5mg / mL (stir for 15 minutes until completely dissolved); transfer the solution to a hydrothermal reaction kettle, and react at 180°C for 24 hours to generate WO X After the nanowires were cooled to normal temperature, they were washed with deionized water and ethanol for 3 times, and then dried in a vacuum oven at 45°C for one night. figure 1 (a));

[0029] (b) Preparation of WO X @PEDOT Nanorods: Take 35mg of WO X Disperse the nanowires in 1mL deionized water, add 8μLEDOT dropwise, and stir thoroughly at room temperature for 30 days (rotating speed 500-800rpm) until the solution turns dark blue; then let it stand ...

Embodiment 2

[0031]This embodiment provides a poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod (abbreviated as WO X @PEDOT nanorods) and its preparation method are basically the same as in Example 1, except that in step (b), 16 μL of EDOT is added dropwise.

Embodiment 3

[0033] This embodiment provides a poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod (abbreviated as WO X @PEDOT nanorods) and its preparation method are basically the same as those in Example 1, except that in step (b), 24 μL of EDOT is added dropwise.

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Abstract

The invention relates to a poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorod, a preparation method and application thereof. The tungsten oxide nanowire prepared by hydrothermal reaction is dispersed in a solvent, and EDOT is added to react to obtain a blue solution , and then the PEDOT and tungsten oxide nanowires are removed by sedimentation and then dried. The process steps are simple and the conditions are mild, and uniform and neutral poly-3,4-ethylenedioxythiophene-coated tungsten oxide nanorods can be obtained; the tungsten oxide nanorods have a higher Fermi level or work function, and can Effectively reduce the corrosion of PSS to the anode substrate, thereby improving the efficiency and life of perovskite solar cells; and its energy level is closer to that of perovskite materials, and can be used as hole transport for perovskite solar cells layer, which can effectively extract and transport photogenerated holes, thereby improving the energy conversion efficiency of perovskite solar cells.

Description

technical field [0001] The invention belongs to the field of photovoltaic materials, and relates to a hole transport layer material of a perovskite solar cell, in particular to a poly 3,4-ethylenedioxythiophene-coated tungsten oxide nanorod, a preparation method and the poly 3,4 - Application of ethylenedioxythiophene-coated tungsten oxide nanorods. Background technique [0002] Perovskite solar cells have the characteristics of light weight, good flexibility, low cost, and environmental protection, and are currently a hot research topic in the field of new energy. The hole transport layer is a functional material between the anode and the photoactive layer, which can effectively collect and transport holes and inhibit the recombination of holes and electrons. Therefore, the selection of suitable hole transport materials plays a crucial role in optimizing the photoelectric conversion efficiency and device performance of perovskite solar cells. [0003] At present, for pero...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/46H01L51/42B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H10K71/00H10K30/352H10K2102/00Y02E10/549
Inventor 冯莱刘萍周东营王琛
Owner SUZHOU UNIV
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