Mature laser processing technologies include: laser rapid prototyping technology, laser welding technology, laser drilling technology, laser cutting technology, laser marking technology, laser de balancing technology, laser etching technology, laser fine tuning technology, laser storage technology, laser scribing technology, laser cleaning technology, laser heat treatment and surface treatment technology. Solar cell power generation is a renewable and environmentally friendly power generation method. It will not produce greenhouse gases such as carbon dioxide and pollute the environment. In short, the power generation principle of solar photovoltaic cells is a power generation method that uses solar cells to absorb sunlight with a wavelength of 0.4-1.1um (for silicon crystals) and directly convert light energy into electrical energy output. Application of laser etching technology in solar cell manufacturing - working principle of solar cell (1) As an industrial tool, laser is a key technology in photovoltaic industry. It can ensure low-cost manufacturing process, and produce high efficiency solar cells. Laser etching scribing technology is an ideal choice to achieve this goal, and it is more efficient than other processes, because it improves the process reliability in the production process on the one hand, and reduces the production cost on the other hand. These advantages have been fully reflected in the production of crystalline silicon solar cells and thin film solar cells. Application of laser etching technology in solar cell manufacturing - solar cell production process (2) As the third process in the production of solar cells, laser etching technology is mainly used to remove the n-type silicon around the diffused silicon wafer and prevent electric leakage. The characteristics of laser processing mainly include fast, accurate, zero contact and good thermal effect. Just these characteristics meet the requirements of photovoltaic processing process, and laser processing is the catalyst for the establishment of photovoltaic industry. As an indispensable part of solar cell manufacturing, laser etching technology has gradually become an important driving force for the sustainable growth of solar industry.