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Photovoltaic tile for improving conversion efficiency and preparation method thereof

A conversion efficiency and photovoltaic technology, which is applied in the field of photovoltaic tiles with improved conversion efficiency and its preparation, can solve problems such as reducing battery efficiency, and achieve the effects of improving battery conversion efficiency, high integration, and improving solar spectrum utilization.

Inactive Publication Date: 2020-01-14
张伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this is that the ceramic glaze layer on the surface will reduce the number of photons entering the solar cell, thereby reducing the efficiency of the cell

Method used

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  • Photovoltaic tile for improving conversion efficiency and preparation method thereof
  • Photovoltaic tile for improving conversion efficiency and preparation method thereof
  • Photovoltaic tile for improving conversion efficiency and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0043] The preparation method of the photovoltaic tile of the present invention comprises the following stages:

[0044] 1) Attach the solar cell layer to the substrate, and lead out the positive and negative electrodes, or directly prepare the solar cell layer on the substrate, and lead out the positive and negative electrodes;

[0045] 2) Evenly mix the luminescent powder in the ceramic glaze, apply the ceramic glaze mixed with the luminescent powder on the solar cell layer to obtain a ceramic glaze layer; or apply the luminescent powder on the solar cell layer to form a luminescent powder layer, and then Coating ceramic glaze on the luminescent powder layer to obtain a ceramic glaze layer;

[0046] 3) Apply the ceramic glaze obtained in step 2) evenly on the surface of the solar cell to obtain a ceramic glaze layer. The 3D printing method, the inkjet method, the spin coating method, the screen printing method and the slurry method are used to uniformly coat the surface of ...

Embodiment 1

[0048] A photovoltaic ceramic tile, the substrate of which is polyimide with a thickness of 2.0mm, a copper indium gallium selenide photovoltaic cell layer is arranged on it, and a wire lead-out electrode is arranged. Copper indium gallium selenide thin film battery is prepared by standard process; commercially used NaGdF in powder state is selected 4 :Eu 3+ As a down-conversion material for converting near-ultraviolet light into visible light, the particle size is 20 μm. The up-conversion material is mixed with glaze, and the up-conversion material accounts for 8% by weight. The obtained ceramic glaze is uniformly coated on the surface of the solar cell by using a hot stage heating method to obtain a ceramic glaze layer. The photovoltaic conversion efficiency is 13.2%.

[0049] Its preparation method is as follows:

[0050] Clean the flexible stainless steel foil substrate and put it into the magnetron sputtering machine. In order to prevent elements in the stainless stee...

Embodiment 2

[0052] A photovoltaic ceramic tile, the base of which is stainless steel, with a thickness of 2.0 mm, on which a copper-zinc-tin-sulfur thin-film battery layer is arranged, and a wire lead-out electrode is arranged. The preparation of battery can refer to embodiment 1, selects the NaYF that commercial use becomes powdery state for use 4 : Er, Yb is used as an up-conversion material for converting near-infrared light and infrared light into visible light, and its particle size is 0.5 μm. The up-conversion material is mixed with glaze, and the weight ratio of the up-conversion material is 0.5%. The obtained ceramic glaze is uniformly coated on the surface of the solar cell by a 3D printing method to obtain a ceramic glaze layer. The photovoltaic conversion efficiency is 14.6%.

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Abstract

The invention belongs to the field of solar cells, and specifically discloses a photovoltaic tile for improving conversion efficiency and a preparation method thereof. The photovoltaic tile includes aceramic glaze layer, a solar cell layer, and a substrate in order from top to bottom. The photovoltaic tile further includes luminescent powder. The luminescent powder is mixed in the glaze of the ceramic glaze layer, or the luminescent powder is coated between the ceramic glaze layer and the solar cell layer to form a light emitting layer. The method for preparing the photovoltaic tile, which isprovided by the invention, comprises the steps that 1) the solar cell layer is attached to the substrate, and positive and negative electrodes are led out, or the solar cell layer is directly prepared on the substrate, and positive and negative electrodes are led out; 2) luminescent powder is uniformly mixed in the ceramic glaze, and the ceramic glaze mixed with the luminescent powder is coated on the solar cell layer, or the luminescent powder is coated on the solar cell layer to form a luminescent powder layer, and then the ceramic glaze is coated on the luminescent powder layer to acquirethe ceramic glaze layer. The method can be used to improve the conversion efficiency of the photovoltaic tile.

Description

technical field [0001] The invention belongs to the field of photovoltaic building integration, and in particular relates to a photovoltaic tile with improved conversion efficiency and a preparation method thereof. Background technique [0002] At present, my country's photovoltaic cells are mainly used in the sunny central and western regions and suburbs, and the use of photovoltaic cells in cities is rare. On the other hand, building energy consumption has become one of the three major energy consumption alongside industrial energy consumption and transportation energy consumption. Combining buildings with photovoltaic power generation can not only effectively use solar energy in cities, but also reduce building energy consumption. BIPV is a typical example of combining photovoltaic cells with buildings in cities. At present, the core factor that restricts the widespread application of photovoltaic building integration is the monotonous color presented by photovoltaic ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/055H01L31/18H01L31/20H01G9/08H01G9/20E04F13/074
CPCE04F13/0866E04F13/142E04F2290/02E04F2290/026H01G9/08H01G9/209H01L31/0481H01L31/055H01L31/18H01L31/202Y02E10/52Y02E10/542Y02P70/50
Inventor 张伟李永武
Owner 张伟