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Preparation method of perovskite solar cell and thermoplastic carbon counter electrode

A solar cell, thermoplastic technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low battery efficiency, difficult to achieve battery flexibility, poor stability, etc., to achieve high conversion efficiency, good stability and flexibility, Simple preparation process

Active Publication Date: 2017-02-08
深圳市华物光能技术有限公司
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Problems solved by technology

[0007] Although the preparation of perovskite solar cells without hole transport materials is beneficial to the reduction of cell cost, it also reflects the limitations of the current carbon counter electrode preparation methods.
And using the existing carbon counter electrode preparation method to prepare perovskite solar cells, the battery efficiency is low, the stability is poor, and it is difficult to achieve battery flexibility. Therefore, a new and more general carbon counter electrode preparation for perovskite solar cells has been developed. method, it is necessary to have high cell conversion efficiency and be able to adapt to different specific types of perovskite solar cells

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  • Preparation method of perovskite solar cell and thermoplastic carbon counter electrode

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preparation example Construction

[0026] In a typical embodiment of the present invention, the preparation method of the thermoplastic carbon counter electrode includes: step S1, dissolving and dispersing the conductive carbon material and the thermoplastic polymer in an organic solvent to form a uniform carbon slurry. Step S2 , providing a base, and using carbon paste to form a carbon paste layer on the surface of the base. Step S3, drying the carbon paste layer to remove the organic solvent in the carbon paste layer, so as to obtain a film-shaped and conductive thermoplastic carbon counter electrode.

[0027] Considering factors such as electrical conductivity, material particle size, etc., preferably, the conductive carbon material is selected from one or more of graphite, carbon black, carbon fiber, carbon nanotube, and graphene. The above-mentioned conductive carbon material has good conductivity and is easy to disperse into submicron particles, and can be prepared into a thin film with excellent conducti...

Embodiment 1

[0042] 1) Weigh 0.6 gram of graphite powder (1-3 μm in particle size, provided by Aladdin Reagent Co., Ltd.), 0.2 gram of counter electrode acetylene black (provided by Alfa Aisha Chemical Co., Ltd.), 0.2 gram of polyvinyl acetate ( PVAc) (provided by Sinopharm Chemical Reagent Co., Ltd.), they were added to 10 milliliters of ethyl acetate, ball milled at 200r / min for 4 hours, and 0.1g was used to adjust the viscosity and prevent aging. To obtain a uniform carbon paste for the counter electrode.

[0043] 2) Evenly drop-coat the carbon slurry onto the substrate PTFE film to form a carbon slurry layer, and air-dry it naturally to remove the organic solvent ethyl acetate in the carbon slurry layer, and then peel it off completely with a blade to obtain the thickness A self-supporting conductive carbon film with a diameter of 0.1mm, that is, a thermoplastic carbon counter electrode, can be used for the finished thermoplastic carbon counter electrode of a perovskite solar cell.

...

Embodiment 2

[0047] 1) Weigh 0.4 gram of graphite powder (the particle size is 400nm, provided by Aladdin Reagent Co., Ltd.), 0.2 gram of carbon nanotubes (provided by Aladdin Reagent Co., Ltd.), 0.4 gram of ethylene-vinyl acetate copolymer (EVA) ( Provided by Aladdin Reagent Co., Ltd.), they were added in 10 ml of organic solvent toluene, ultrasonically dispersed for 3 hours at 50 ° C, and 0.04 g of ethyl cellulose was added to adjust viscosity and prevent aging to obtain a uniform counter electrode carbon paste.

[0048] 2) Evenly scrape and coat the carbon slurry on a flat brass sheet to form a carbon slurry layer. After natural air drying, peel the obtained conductive carbon film off the base of the brass sheet to obtain a conductive carbon film with a thickness of 0.2mm, that is, thermoplastic carbon. Electrode.

[0049] 3) According to the method in the reference (Sci.Rep., 2012, 2, 591.), the photoanode of the perovskite solar cell containing the hole transport material was prepare...

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Abstract

The invention discloses a method for preparing a perovskite solar battery and a thermoplastic carbon counter electrode thereof. The perovskite solar cell includes a photoanode and a thermoplastic carbon counter electrode formed on the photoanode; its preparation method includes: step S1, dissolving and dispersing a conductive carbon material and a thermoplastic polymer in an organic solvent to form a uniform carbon paste material; step S2, providing a substrate, and forming a carbon paste layer on the surface of the substrate with carbon paste; and step S3, drying the carbon paste layer to remove the organic solvent in the carbon paste layer, thereby obtaining a film-like and conductive thermoplastic carbon counter electrode. Since the finished thermoplastic carbon counter electrode is prepared in advance, and then the finished thermoplastic carbon counter electrode is directly hot-pressed on the photoanode, a flexible perovskite solar cell is prepared, which improves the conversion efficiency and stability of the perovskite solar cell. properties, the preparation process is simple, and it is suitable for perovskite solar cells with various structures.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a method for preparing a perovskite solar cell and a thermoplastic carbon counter electrode thereof. Background technique [0002] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect, also known as a photovoltaic cell. Perovskite Solar Cells (Perovskite Solar Cells) is currently a relatively new type of solar cells, mainly using similar ABX 3 (A=CH 3 NH 3 + etc.; B=Pb 2+ , Sn 2+ etc.; X=Cl - , Br - , I - etc.) photovoltaic materials with a perovskite structure to realize photoelectric conversion, which has the advantages of simple manufacturing process, wide source of raw materials, and low cost. [0003] The basic structure of a perovskite solar cell includes a substrate, a transparent electrode, an electron transport material, a light-absorbing layer of a perovskite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/44
CPCH10K71/60H10K30/15H10K30/151H10K30/81Y02E10/549
Inventor 孟庆波肖俊彦杨月勇李冬梅罗艳红
Owner 深圳市华物光能技术有限公司