tady fakt co si člověk sám neudělá, to nemá :D
Can solar panels be made without silver?https://www.thesolarnerd.com/blog/can-solar-panels-be-made-without-silver/But the German lab Fraunhofer ISE has worked on a screen printing process that can reduce that to 19 micrometers, which will reduce the amount of silver used by around 30%. At the same time, the process improves cell efficiency, so it’s a win-win.
Another way to eliminate silver is to develop rear contact or back contact solar cells. With this type of cell, the wiring is placed on the back of the cell rather than the front.
Because of this placement, the wires no longer block light from hitting the front of the cell. This means that the electrical conductivity of the wires is less critical, which allows manufacturers to use cheaper metals such as copper.
In fact Maxeon solar cells, which are used in SunPower panels, cover the entire rear of the cell with a sheet of copper