Manufacturing method of heterojunction solar cell and heterojunction solar cell

Abstract

The invention provides a manufacturing method of a heterojunction solar cell and a heterojunction solar cell. The manufacturing method comprises the following steps that: an initial solar cell is formed, the initial solar cell is provided with a cutting area, the formation of the initial solar cell further comprises the following steps of forming a first conductive type semiconductor layer on one side of a semiconductor substrate layer, forming a first transparent conductive layer on one side, back to the semiconductor substrate layer, of the first conductive type semiconductor layer, forming a first cutting groove in the first transparent conductive layer of the cutting area, making the bottom of the first cutting groove expose the first conductive type semiconductor layer; and the initial solar cell is cut along the cutting area, and the width of the first cutting groove is larger than the cutting width of the initial solar cell in the step of cutting the initial solar cell along the cutting area. The method can effectively avoid reduction of photoelectric conversion efficiency caused by cutting.

Description

technical field [0001] The invention relates to a solar cell cutting technology, in particular to a method for manufacturing a heterojunction solar cell and the heterojunction solar cell. Background technique [0002] Solar cells have the advantages of clean and pollution-free, renewable, and stable working performance. Solar cells, also known as photovoltaic cells, use the photovoltaic effect at the semiconductor interface to directly convert the energy of sunlight into electrical energy. During the conversion process, electron-hole pairs are generated by absorbing light, and the electron-hole pairs are separated or diffused to realize the transmission of generating current. According to different structures and manufacturing processes, solar cells are divided into different types. For solar cells based on crystalline silicon, semiconductor layers and electrodes are prepared on one or both sides of the substrate to form cells, and then multiple cells are welded for series...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the present invention provides a manufacturing method of heterojunction solar cells and heterojunction solar cells to solve the problem of cutting heterojunction solar cells. The problem of reduced efficiency

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