Heterojunction solar battery and preparation method therefor

A solar cell and heterojunction technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of poor passivation effect of the intrinsic layer and lower conversion efficiency of the cell, so as to improve conversion efficiency, increase production efficiency, increase The effect of the built-in electric field

Inactive Publication Date: 2017-09-15
BEIJING JUNTAIINNOVATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a method for preparing a heterojunction solar cell to solve the problems in the prior art that the passivation effect of the intrinsic layer is poor and the conversion efficiency of the cell is reduced under the condition of high doping concentration

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  • Heterojunction solar battery and preparation method therefor
  • Heterojunction solar battery and preparation method therefor

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Embodiment Construction

[0039] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0040] Please refer to figure 1 as shown, figure 1 It is a flowchart of an embodiment of a method for preparing a heterojunction solar cell provided by the present invention.

[0041] The invention provides a method for preparing a heterojunction solar cell, comprising:

[0042] Step S101: providing a substrate;

[0043] The substrate in the step S101 can be an n-type single silicon wafer. In order to improve the performance of the heterojunction solar cell, since the metal impurities and / or oil stains on the substrate m...

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Abstract

The invention discloses a heterojunction solar battery and a preparation method therefor. The preparation method comprises the steps of providing a substrate; depositing an intrinsic layer on the two sides of the substrate separately; depositing n type doping layers and p type doping layers on the intrinsic layer on the two sides of the substrate respectively, wherein at least two layers of n type doping layers and/or p type doping layers are provided; and the doping concentration of each layer of the n type doping layers and/or p type doping layers is progressively increased in a longitudinal direction far from the substrate; and forming a transparent conductive layer and an electrode layer on the n type doping layers and p type doping layers in sequence separately. Therefore, the battery conversion efficiency and production efficiency are improved.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a preparation method of a heterojunction solar cell and the heterojunction solar cell. Background technique [0002] With the rapid development of technology, the conversion efficiency of crystalline silicon solar cells is increasing year by year. At present, my country is vigorously promoting distributed solar photovoltaic power generation. Due to limited roof resources, solar cell modules with high conversion efficiency are required. It is precisely because high-efficiency single crystal heterojunction cells have many advantages such as high efficiency, low energy consumption, simple process flow, and small temperature coefficient, they will be vigorously developed in the next few years, and the improvement of their efficiency is particularly important. [0003] The PN structure of conventional HIT heterojunction cells is a-Si:H(p) (p-type doped layer) / a-Si (intrinsic i) / c-Si (monocr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0352H01L31/075H01L31/18
CPCH01L31/035272H01L31/075H01L31/1804H01L31/0747Y02E10/547Y02E10/548Y02P70/50H01L31/02366H01L31/0392H01L31/072H01L31/18H01L31/022425H01L31/03125H01L31/1812
Inventor 陈贤刚杨苗郁操张津燕徐希翔
Owner BEIJING JUNTAIINNOVATION TECH CO LTD
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