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A preparation method of perovskite/mwt heterojunction series-parallel composite battery

A tandem battery and composite battery technology, applied in semiconductor/solid-state device manufacturing, circuits, photovoltaic power generation, etc., can solve the problem of difficulty in breaking the efficiency limit, and achieve the effect of reducing the risk of falling off, reducing metal shading, and high stacking efficiency

Active Publication Date: 2022-01-28
JIANGSU SUNPORT POWER CORP LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the photoelectric conversion efficiency of high-efficiency crystalline silicon cells such as PERC, TOPCon, HJT, and IBC continues to set new records, it is difficult for all monocrystalline silicon cell technologies to break their theoretical efficiency limit (about 29%), no matter what kind of structural design.

Method used

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  • A preparation method of perovskite/mwt heterojunction series-parallel composite battery
  • A preparation method of perovskite/mwt heterojunction series-parallel composite battery

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Embodiment 1

[0054] The invention provides a perovskite / MWT heterojunction series-parallel composite battery structure ( figure 1 ), the structure consists of upper and lower layers of perovskite / MWT heterojunction cells connected in parallel through the middle metal lead welding. Conductive leads" exposed.

[0055] Among them, the perovskite / MWT heterojunction tandem battery is formed by superimposing the perovskite battery on the MWT heterojunction battery. The front current is collected to the back negative electrode point through the plugging electrode, and the back cover is in contact with the positive electrode point and is in contact with the negative electrode point. The back electrode layer with pole isolation, print a layer of insulating film on the back electrode layer, only expose the positive electrode point and the negative electrode point to contact with the "metal conductive lead", and the "metal conductive lead" is on the back edge of the upper battery (the width is about ...

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Abstract

The invention discloses a preparation method of a perovskite / MWT heterojunction series-parallel composite battery, and relates to the technical field of solar battery production. By introducing MWT back contact technology to connect two series cells in parallel to obtain higher photoelectric conversion efficiency. The series-parallel composite battery includes two perovskite / MWT heterojunction tandem batteries. The front side of the titanite / MWT heterojunction tandem cell is equipped with a front electrode, and the perovskite / MWT heterojunction tandem cell is pierced with a plugging electrode; several positive electrode points are connected to the back electrode layer, and several negative electrode points pass through The plugging electrode is connected to the grid line of the front electrode; the positive electrode point is connected to the conductive lead wire of the positive electrode point, and the negative electrode point is connected to the conductive lead wire of the negative electrode point. The composite battery structure has higher stacking efficiency.

Description

technical field [0001] The invention relates to the technical field of solar cell production, in particular to a method for preparing a perovskite and MWT heterojunction series-parallel composite cell. Background technique [0002] With the introduction of my country's "carbon peak" and "carbon neutrality" goals, the photovoltaic industry has ushered in new opportunities for development, and the development of the photovoltaic industry has been strongly promoted by the pursuit of high efficiency. one of the most effective ways. Although the photoelectric conversion efficiency of high-efficiency crystalline silicon cells such as PERC, TOPCon, HJT, and IBC continues to set new records, it is difficult for all single-crystalline silicon cell technologies to break their theoretical efficiency limit (about 29%), no matter what kind of structural design. Therefore, the perovskite / silicon-based stacked structure system is one of the main research directions to obtain higher efficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/04H01L31/0224H01L31/20H01L51/42
CPCH01L25/043H01L31/02245H01L31/202H10K39/601H10K30/10Y02E10/549Y02P70/50
Inventor 王浩王伟吴仕梁张凤鸣
Owner JIANGSU SUNPORT POWER CORP LTD
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