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Heterojunction solar cell and preparation method thereof

A solar cell and heterojunction technology, which is applied in the field of solar cells, can solve the problems of poor stability and high cost of transparent conductive films, and achieve the effects of being beneficial to environmental protection, improving stability, and preventing the influence of water vapor

Pending Publication Date: 2022-01-11
宣城睿晖宣晟企业管理中心合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of poor stability and high cost of the transparent conductive film of the heterojunction solar cell in the prior art, thereby providing a heterojunction solar cell and its preparation method

Method used

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  • Heterojunction solar cell and preparation method thereof
  • Heterojunction solar cell and preparation method thereof

Examples

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Embodiment 1

[0053] This embodiment provides a heterojunction solar cell, please refer to figure 1 ,include:

[0054] Semiconductor substrate layer 1;

[0055] A first transparent conductive film 2 located on one side of the semiconductor substrate layer 1, the material of the first transparent conductive film 2 includes doped zinc oxide;

[0056] The first gate lines 3 located on the surface of part of the first transparent conductive film 2 facing away from the semiconductor substrate layer 1, a plurality of the first gate lines 3 are arranged at intervals;

[0057] The protective film 4 located on the surface of part of the first transparent conductive film 2 facing away from the semiconductor substrate layer 1, the protective film 4 is arranged adjacent to the first gate line 3 and at least blocks the first gate line Line 3 part of the sidewall.

[0058] The semiconductor substrate layer 1 includes a silicon substrate, for example, an N-type crystalline silicon substrate.

[0059] ...

Embodiment 2

[0083] This example provides a method for preparing a heterojunction solar cell, please refer to figure 2 , including the following steps:

[0084] S1: providing a semiconductor substrate layer 1;

[0085] S2: forming a first transparent conductive film 2 on one side of the semiconductor substrate layer 1, the material of the first transparent conductive film 2 includes doped zinc oxide;

[0086] S3: forming a protective film 4 on the surface of part of the first transparent conductive film 2 away from the semiconductor substrate layer 1, and the protective film 4 exposes part of the first transparent conductive film 2;

[0087] S4: Form a first grid line on the surface of the first transparent conductive film 2 exposed by the protective film 4, a plurality of the first grid lines are arranged at intervals, and the protective film is in phase with the first grid line adjacent to and shield at least part of the sidewall of the first gate line.

[0088] In this embodiment, it ...

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Abstract

The invention provides a heterojunction solar cell and a preparation method thereof, and the heterojunction solar cell comprises a first transparent conductive film located at one side of a semiconductor substrate layer, wherein the material of the first transparent conductive film comprises doped zinc oxide; first grid lines which are located on the surface of the side, away from the semiconductor substrate layer, of part of the first transparent conductive film, wherein the first grid lines are arranged at intervals; and a protection film which is located on the surface of the side, away from the semiconductor substrate layer, of part of the first transparent conductive film, wherein the protection film is adjacent to the first grid line and at least shields part of the side wall of the first grid line. The first transparent conductive film of the heterojunction solar cell is made of doped zinc oxide, so that the use of a scarce and toxic material containing indium is reduced, the optical performance can be ensured, the cost of the heterojunction solar cell is reduced, and environmental protection is facilitated; the protection film can prevent the first transparent conductive film from being affected by water vapor, and the stability of the first transparent conductive film is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a heterojunction solar cell and a preparation method thereof. Background technique [0002] A solar cell is a device that converts solar energy directly into electrical energy based on the photovoltaic effect. At present, crystalline silicon solar cells are the mainstream of the photovoltaic industry, occupying more than 80% of the market. Heterojunction withinintrinsic Thin layer (HJT) battery is an important solar cell. The heterojunction structure is centered on the N-type crystalline silicon substrate, with P-type crystalline silicon substrates on both sides of the N-type crystalline silicon substrate. Amorphous silicon layer and N-type amorphous silicon layer, the heterojunction structure has excellent photoelectric characteristics that cannot be achieved by the PN junctions of the two semiconductors. Using the heterojunction structure to prepare cells is a very competi...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/072H01L31/0224C23C14/34C23C14/08
CPCH01L31/072H01L31/022483H01L31/1888C23C14/086C23C14/34Y02E10/50Y02P70/50
Inventor 陈光羽周肃龚道仁辛科李建清
Owner 宣城睿晖宣晟企业管理中心合伙企业(有限合伙)
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