With the continuous development of photovoltaic technology, social production for photovoltaic power generation system demand is increasing, which also requires the photovoltaic industry to further improve their own production efficiency and production quality, while reducing production costs as much as possible. In this context, laser technology plays an important role, with its unique performance has become one of the most widely used technologies in the photovoltaic industry today, and occupies a huge advantage compared to the traditional photovoltaic industry applied to the technology.
Application of laser technology
In the manufacturing process of photovoltaic components, lasers are used to thin, cut and shape silicon wafers. The laser can concentrate a large amount of its energy into a small cross-sectional area, which greatly increases the efficiency of energy utilization and makes it possible to process hard materials.
At the same time, the high energy characteristics of the laser make it extremely hot, which can be used to burn silicon wafers and attached materials under the precise control of the staff, forming cell edge doping or coating the surface of photovoltaic components, improving the power generation and solar energy utilization of photovoltaic cells, using the laser source as the main light source, reducing the cost of power generation, and fundamentally improving the efficiency of photovoltaic power generation.
Advantages of Laser Technology
Laser technology not only makes the production of photovoltaic cells easier, but also reduces the rate of material damage during the production process while maintaining production efficiency, which again reduces the cost of photovoltaic power generation from the other side.
From the point of view of producing photovoltaic components, laser technology undoubtedly occupies a huge advantage compared with other production processes. First of all, the wavelength of the laser can be adjusted by the staff to change accordingly. In photovoltaic components, although the most important material for production is silicon based semiconductor materials, some metal materials and other dielectric materials are still needed to complete the production. The traditional material processing process has obvious defects when dealing with different types of materials and often requires temporary replacement of equipment, while laser technology can change the wavelength of the laser according to the absorption characteristics of different materials to light waves, thus simplifying the production steps.
Secondly, the physical and chemical properties of silicon are relatively stable, but at high temperatures it will still react with oxygen in the air to produce silicon dioxide; in addition, although silicon is hard, it is brittle and will break when subjected to violent external forces. This limits the application of traditional material processing in the photovoltaic industry. Laser technology does not generate high heat when using short-wave or pulsed light sources, which reduces the probability of qualitative changes in silicon, and does not have physical mechanical contact with silicon when treating silicon, which reduces damage to silicon due to mechanical impact and ensures the reliability of laser technology. In addition, the monochromatic nature of laser light and its relatively high energy content make it the most energy-efficient power source for photovoltaic power generation. This greatly contributes to the efficiency of photovoltaic power generation. Finally, in addition to cutting silicon, lasers are capable of coating photovoltaic components with a greater degree of automation and less damage than other photovoltaic component coating processes.
Laser technology is of great importance to the development of current photovoltaic power generation technology. As the application of laser technology in photovoltaic continues to expand, the cost of photovoltaic power generation is getting lower and the efficiency is getting higher, so the application of laser technology in the field of photovoltaic power generation will become more and more extensive to promote the further development of photovoltaic power generation. From the current situation, it seems that laser technology will become an indispensable and important production process in the photovoltaic power generation industry, and will become the most important source of power to quickly achieve the current technological innovation of photovoltaic components in the photovoltaic power generation industry.
The application of laser in photovoltaic is mainly the manufacturing of cell production process, in simple terms is a large piece of silicon slicing, the technology involved in the middle is not complicated, the main pain point is the localization of production equipment, the production process of silicon wafers and chip wafers similar, but the wafer precision requirements are higher, the silicon wafer requirements are simple and brutal. Photovoltaic module production production process, involving multiple processes, and the completion of these processes equipment manufacturers also take advantage of the east wind of the photovoltaic industry, rapid development. The market space of PV laser equipment is mainly influenced by four core factors: the expansion rate of upstream cell production capacity, the expansion structure of different technology paths, the amount of investment in a single GW, and the application penetration rate of the corresponding technology. The application of laser equipment in the field of photovoltaics has a broad prospect, and with the continuous implementation and promotion of national policies, the future development trend of the era of new energy as the mainstay is becoming more and more obvious. It is believed that in the future time, photovoltaic power generation technology will be applied to a wider range of fields, becoming the most important source of electricity in our daily lives, and laser technology will also contribute to the development of photovoltaics.
