First of all, we need to understand that the main component of glass powder is silicate, which has good light transmittance, high temperature resistance and aging resistance. It is closely related to solar slurry. In solar panels, glass powder is used as a filler for electrodes, which can improve the electrical properties, stability and light absorption efficiency of the material.
In addition, glass powder can also act as a dispersant in solar slurry, effectively improving the rheology and printability of the slurry, and bringing convenience to the production of solar panels.
As an important additive, glass powder is injecting new vitality into the solar slurry industry. As environmental awareness continues to grow and the demand for renewable energy increases, the demand for solar slurries continues to expand. As a transparent powder material, glass powder has good light reflection properties and thermal stability, which can improve the efficiency and durability of solar cells. Using glass powder to replace traditional silica sand to achieve green and environmentally friendly production in solar slurries is undoubtedly the development trend of the photovoltaic industry.
To sum up, in solar slurry, the application of glass powder mainly includes the following aspects:
Improve the efficiency and stability of solar cells: Glass powder can increase the reflectivity of the surface of solar cells and reduce light reflection losses, thereby improving the efficiency and stability of the cells.
Enhance the fluidity and water retention of slurry: Glass powder can form a good dispersion system with other raw materials to improve the fluidity and water retention of slurry, thereby facilitating construction and reducing slurry loss.
Improve the thermal stability of the slurry: Glass powder can reduce the thermal stability of the slurry and avoid deterioration of the slurry due to excessive temperature during the construction process.
The glass powder in the solar slurry not only provides a high-temperature transport medium to transport various functional components in the slurry to the surface of the conductor matrix, but also provides a bonding medium to allow various powders to be sintered together. And tightly combined with the surface of the silicon wafer, it provides a reaction medium to promote physical and chemical reactions between various powder particles at high temperatures, including dissolution, melting, diffusion, sintering, precipitation, crystallization, phase change, oxidation and reduction. In a rapid sintering process that lasts only tens of seconds, the glass powder in the solar slurry undergoes rapid heating and cooling of thousands of degrees Celsius per minute, and must complete all the above functions. This will definitely place high requirements on glass components. In addition to the familiar oxides such as Bi, B, Al, and Zn, other alkaline oxides that exist in trace amounts also have key effects.