Laser drilling method for amorphous silicon solar cell glass substrate

Abstract

The invention belongs to the field of amorphous silicon solar cell drilling and provides a laser drilling method for an amorphous silicon solar cell glass substrate. The laser drilling method comprises the steps that firstly, a membrane face of the glass substrate coated with a membrane layer is upward, and a membrane layer within a round ring is removed inwards from the edge of the portion to be drilled; secondly, within the round ring without the membrane layer, layered laser drilling is conducted on the lower surface of the glass substrate. By the adoption of the laser drilling method, the membrane face of the amorphous silicon solar cell glass substrate is placed on a processing production line, the membrane layer within the round ring is removed through laser, and drilling is conducted along the track of the hypocycloid in a layered mode; in this way, the equipment cost is reduced, production line processing of amorphous silicon solar cell glass substrates is guaranteed, and the membrane face of the membrane layer is prevented from being polluted.

Description

technical field [0001] The invention belongs to the field of drilling holes for amorphous silicon solar cells, in particular to a laser drilling method for glass substrates of amorphous silicon solar cells. Background technique [0002] With the increasingly serious problems of global energy shortage and environmental pollution, solar photovoltaic power generation has become an emerging industry that is widely concerned and focused on development because of its clean, safe, convenient, and high-efficiency characteristics. However, my country is rich in solar energy resources, and the land area suitable for solar power generation and the light-receiving area of ​​buildings are large. At present, the total area of ​​buildings with green building evaluation marks in China is less than 40 million square meters, and there is huge space for the development of green buildings in the future. [0003] Building Integrated Photovoltaics (BIPV) is suitable for most buildings, such as fl...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a laser drilling method for glass substrates of amorphous silicon solar cells to solve the problems of high equipment cost and easy contamination of the film surface in the existing process

Images