Silver is a metal element with strong ductility, good conductivity and thermal conductivity. Its chemical properties are stable. It is the most thermal and electrical conductivity of all substances, with a maximum conductivity and electrical conductivity of copper. Its electrical conductivity is about 5.7% higher than that of copper. Generally speaking, in the production project, monocrystalline or polycrystalline silicon solar cell will coat silver paste on the front and back electrodes of each battery, which is the thin white lines passing through the solar cell we see, the thickest ones are the gate lines, and the small thin lines are the silver lines.
It is printed on screen. This wire is very thin and must also be able to conduct electricity. This requires the material used to reduce resistance and improve the utilization efficiency of solar panels. Silver is such a substance. In order to ensure the convenience of printing, it is in a silver paste state when used. It uses very little. It may require 60 solar cells to extract 8g of silver, but compared with other metals, its cost is still very high.
With the continuous and rapid development of science and technology, in order to reduce the production cost of the panel, many manufacturers gradually reduce the amount of silver under the premise of ensuring the normal use of the panel. Some solar panels even do not need silver during the production process. Generally speaking, silver exists in solar panels, but the content is very small. If you want to make a fortune by recycling solar panels and extracting silver, it is basically impossible.
