Flexible dye-sensitized solar cell and preparation method thereof

A dye-sensitized, solar cell technology, applied in the field of flexible dye-sensitized solar cells and their preparation, can solve problems such as adverse effects on device efficiency and lifespan, high requirements for preparation instruments, complicated processes, etc., and achieves improved photoelectric conversion efficiency, The effect of low resistivity and high transmittance

Inactive Publication Date: 2015-11-18
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the polymer substrate can withstand a temperature of no more than 180°C, each layer of the device and the ITO thin film are required to be prepared at low temperature, which requires high preparation equipment, complicated processes, and high costs; because indium is a rare and precious metal, making ITO is expensive; in addition, indium is highly toxic, and indium and tin are easy to infiltrate into the surrounding materials during the preparation and application process, which will adversely affect the efficiency and life of the device; the recycling cost of ITO waste electronic products is high, which is not conducive to environmental protection

Method used

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  • Flexible dye-sensitized solar cell and preparation method thereof

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preparation example Construction

[0030] A method for preparing a flexible dye-sensitized solar cell, comprising the steps of:

[0031] S1. Select a rigid substrate, and prepare a flexible silver nanowire polymer composite conductive substrate layer 1 on the rigid substrate;

[0032] S2. Prepare the oxide porous film layer 21 on the flexible silver nanowire polymer composite conductive substrate layer 1 prepared in step S1, then soak the oxide porous film layer 21 in the dye solution, after cleaning Dry to obtain photoanode layer 2;

[0033] S3, making a counter electrode layer 4 on the surface of the flexible silver nanowire polymer composite conductive substrate layer 1;

[0034] S4. Pouring electrolyte dye between the photoanode layer 2 and the counter electrode layer 4 to form the electrolyte layer 3 .

[0035] In the step S1, the preparation process of the flexible silver nanowire polymer composite conductive substrate layer 1 includes: ①. Prepare the configured silver nanowire dispersion solution on th...

Embodiment 1

[0040] S1. Preparation of the flexible silver nanowire polymer composite conductive substrate layer 1: select the glass substrate and clean it, and configure the isopropanol dispersion solution of the silver nanowire at room temperature, wherein the mass concentration of isopropanol is 0.1%-1%. , coated on the cleaned glass substrate surface with a squeegee bar to make a silver nanowire thin film layer 11 with a thickness of 0.7 μm, the transmittance of the silver nanowire thin film layer 11 is as high as 83%; The acrylate monomer with a concentration of 1-5% photoinitiator is spin-coated on the surface of the silver nanowire film layer 11, and then the silver nanowire film layer 11 coated with the acrylate monomer is placed under an ultraviolet lamp to initiate Acrylate monomers are polymerized to obtain a polymer layer 12 with a thickness of 300 μm, and the glass substrate is removed after cooling to obtain a flexible silver nanowire polymer composite conductive substrate lay...

Embodiment 2

[0046] S1. Preparation of the flexible silver nanowire polymer composite conductive substrate layer 1: select the glass substrate and clean it, and configure the isopropanol dispersion solution of the silver nanowire at room temperature, wherein the mass concentration of isopropanol is 0.1%-1%. , using the screen printing method to prepare the configured dispersion solution on the surface of the cleaned glass substrate to prepare a silver nanowire film layer 11 with a thickness of 0.5 μm, and the transmittance of the silver nanowire film layer 11 is as high as 90%. Then the acrylate monomer of the photoinitiator added with the mass concentration of 1 to 5% is drop-coated on the surface of the silver nanowire film layer 11, and then the silver nanowire film layer 11 coated with the acrylate monomer is placed on the Initiate the polymerization of acrylate monomers under an ultraviolet lamp to obtain a polymer layer 12 with a thickness of 500 μm, and remove the glass substrate aft...

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Abstract

The invention relates to a flexible dye-sensitized solar cell comprising a flexible silver nano-wire polymer composite conductive substrate layer, a photoanode layer, an electrolyte layer, and a counter electrode layer. The layers are successively laminated. The flexible silver nano-wire polymer composite conductive substrate layer contains a silver nano-wire thin-film layer and a polymer layer covering the silver nano-wire thin-film layer. The flexible dye-sensitized solar cell has the following advantages: firstly, the silver nano-wire thin-film layer is used for replacing the existing ITO thin film and thus environment-friendly and cost-saving characteristics are realized; secondly, in-situ polymerization of macro-molecule prepolymers on the silver nano-wire thin-film layer is carried out to obtain the flexible silver nano-wire polymer composite conductive substrate layer based on one-stage forming and the conductive thin film and the polymer substrate are combined closely; and the resistivity is low and the light transmittance is high, and the photoelectric conversion efficiency of the solar cell is improved well; and thirdly, because the silver nano-wire thin-film layer can be prepared by means of silk-screen printing, large-area industrial production can be realized and the preparation process can be modulated and controlled easily.

Description

technical field [0001] The invention relates to the technical field of solar cell production, in particular to a flexible dye-sensitized solar cell and a preparation method thereof. Background technique [0002] Dye-sensitized solar cells (DSSCs) have attracted close attention from the scientific and technological circles due to their low cost and simple preparation process, and are known as the third-generation solar cells; while flexible solar cells are prepared on flexible substrates, which have the advantages of light weight, Portable and anti-bending, it can be used in solar cars, solar sailboats, solar backpacks, etc., and is particularly important for the realization of photovoltaic building integration. [0003] At present, among the DSSC flexible photoelectrode materials, the polymer flexible substrate is considered to be the most practical due to the low price of the polymer substrate, excellent mechanical properties and compatibility with the traditional preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCY02E10/542Y02P70/50
Inventor 熊艳邓飞
Owner YANGTZE UNIVERSITY
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