Chemical bath deposition method and CIGS photovoltaic module preparation method

A deposition method and chemical water bath technology, applied in photovoltaic power generation, chemical recycling, liquid chemical plating, etc., can solve the problems of high price of swing CBD, low deposition rate of CdS, negative effects of coating process, etc., to avoid chemical cleaning process, solve the effect of uniform heating of substrates, improve film formation efficiency and film formation uniformity

Inactive Publication Date: 2019-09-24
BEIJING APOLLO DING RONG SOLAR TECH
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Problems solved by technology

Therefore, the main problem of the immersion CBD process is that before the substrate enters, the generation of CdS particles has already started in the reaction solution and is suspended in the liquid, which has a negative impact on the coating process
The unpreheated substrate will be slowly heated by the solution, and the deposition rate of CdS is low in the early stage, resulting in a low utilization rate of the chemical solution.
In addition, in the immersion CBD process, both the front and back of the substrate will be deposited by CdS, and in the end only the Cd

Method used

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  • Chemical bath deposition method and CIGS photovoltaic module preparation method

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preparation example Construction

[0040] Such as figure 2 Shown, the present invention also provides a kind of preparation method of CIGS photovoltaic module, described method comprises the following steps:

[0041] S1. Provide a substrate 1;

[0042] S2, respectively forming a CIGS layer 2 and a composite material layer 3 on opposite sides of the substrate 1, the composite material layer 3 comprising a polymer hydrogel and magnetic nanoparticles mixed in the polymer hydrogel;

[0043] S3, placing the substrate 1 formed with the CIGS layer 2 and the composite material layer 3 in a deposition solution, and depositing a CdS layer 4 on the CIGS layer 2;

[0044] S4, separating the composite material layer 3 from the substrate 1 .

[0045] In step S1, the material of the substrate 1 is not limited, and any commonly used photovoltaic module substrate may be used, preferably a glass substrate.

[0046] In step S3, during the deposition process, an alternating magnetic field is used to inductively heat the substr...

Embodiment 1

[0051] refer to figure 1 and figure 2 , select a glass substrate 1 and coat a CIGS layer 2 on one side of the glass substrate 1 .

[0052] Then, the other side of the glass substrate 1 is coated with a composite material layer 3 by screen printing, and the composite material layer 3 includes a copolymerized cross-linked product of polyacrylic acid resin and Fe mixed in the copolymerized cross-linked product of polyacrylic acid resin. 3 o 4 Particles, the mass percentages of both are 90% and 10% respectively.

[0053] Then place the glass substrate 1 formed with the CIGS layer 2 and the composite material layer 3 vertically, and soak in a reaction tank filled with a premixed solution of cadmium sulfate, ammonia water, and pure water. Turn on alternating current 5 afterwards, and the frequency that it produces is the alternating magnetic field of 500kHz to make the Fe in composite material layer 3 3 o 4 The particles are heated rapidly so that the glass substrate 1 is heat...

Embodiment 2

[0057] refer to figure 1 and figure 2 , select a glass substrate 1 and coat a CIGS layer 2 on one side of the glass substrate 1 .

[0058] Then, the other side of the glass substrate 1 is coated with a composite material layer 3 by screen printing, and the composite material layer 3 includes polyvinyl alcohol and Fe mixed in polyvinyl alcohol. 3 o 4 Particles, the mass percentages of the two are 80% and 20% respectively.

[0059] Then place the glass substrate 1 formed with the CIGS layer 2 and the composite material layer 3 vertically, and soak in a reaction tank filled with a premixed solution of cadmium sulfate, ammonia water, and pure water. Turn on the alternating current 5 afterwards, and the frequency that it produces is the alternating magnetic field of 550kHz to make the Fe in the composite material layer 3 3 o 4 The particles are heated rapidly so that the glass substrate 1 is heated uniformly to 60°C. At this point the thiourea solution was added and CdS depo...

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Abstract

The invention relates to a chemical bath deposition method and a CIGS photovoltaic module preparation method. The chemical bath deposition method comprises the steps that a substrate is provided; a first functional layer and a composite material layer are respectively formed on opposite sides of the substrate, and the composite material layer comprises polymer hydrogel and magnetic nanoparticles mixed in the polymer hydrogel; the substrate with the first functional layer and the composite material layer is placed in a deposition solution, and the solution is deposited on the first functional layer to form a second functional layer; and the composite material layer is separated from the substrate. The chemical bath deposition method is adopted to the CIGS photovoltaic module preparation method. According to the chemical bath deposition method, the composite material layer is formed on one side of the substrate to be a protection layer, so that the side of the substrate is not in contact with the deposition solution; and meanwhile, the polymer hydrogel in the composite material layer swells in the reaction liquid, so that the circulation of the reaction liquid on the side of the substrate is reduced, invalid deposition of the second functional layer on the composite material layer is avoided, and the composite material layer is convenient to remove.

Description

technical field [0001] The invention relates to a chemical water-bath deposition method, in particular to an improved immersion-type chemical water-bath deposition method and using the method to prepare CIGS photovoltaic modules. Background technique [0002] The chemical bath deposition method, that is, chemical bath deposition (CBD), has the advantages of low cost, low film forming temperature, suitable for preparing large-area thin films, easy to realize continuous production, no pollution, and less material consumption, and is greatly favored by people. focus on. For example, in the structure of CIGS thin-film solar cells with high conversion efficiency, the cadmium sulfide (CdS) semiconductor thin film prepared by chemical water bath deposition method plays an important role as a buffer layer. Generally speaking, the chemical water bath deposition method of CdS film mainly includes the pre-mixing of cadmium sulfate, ammonia water, and pure water, adding thiourea, and C...

Claims

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Application Information

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IPC IPC(8): C23C18/12
CPCC23C18/1204C23C18/06C23C18/1291H01L31/0749H01L31/1828Y02E10/541Y02E10/543Y02P20/582Y02P70/50C08K3/22C08K2003/2275C08L29/04C08L33/02C08L33/26H01L31/0322H01L31/03923H01L31/18
Inventor 王磊郭逦达杨立红
Owner BEIJING APOLLO DING RONG SOLAR TECH
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