Polycrystalline silicon solar cell welding

Can polycrystalline silicon solar cells convert solar energy into Elec-trical energy?

The technology is non-polluting and can rather easily be implemented at sites where the power demand is needed. Based on this, a method for fabricating polycrystalline silicon solar cells is sought and a thorough examination of the mechanisms of converting solar energy into elec-trical energy is examined.

Do polycrystalline silicon solar cells apply to standardized processes?

Polycrystalline silicon solar cells may not apply to standardized processes for certain special properties. Some alternatives to the standard process have been proposed, while they have not been adopted for their relatively high cost. People are still looking for a solution, two of which are not the same as the single crystalline silicon process.

Are polycrystalline silicon based solar cells resonable?

Basic polycrystalline silicon based solar cells with a total area efficiency of app. 5% has been fabricated without the involvement of anti-reflecting coating. This is a resonable result considering that comercial high efficiency solar cells have a con-version efficiency of about 22%, as outlined in chapter 1.

What are the advantages of polycrystalline silicon compared to wafer-based solar cells?

Fabricated as thin layers, polycrystalline silicon also features all advantages of thin-film technologies, namely low costs due to low material wastage with up to factor 100 less material compared to wafer-based solar cells, and the technically feasible monolithic fabrication of large area devices.

How are polycrystalline solar cells made?

Polycrystalline silicon can also be obtained during silicon manufacturing processes. Polycrystalline cells have an efficiency that varies from 12 to 21%. These solar cells are manufactured by recycling discarded electronic components: the so-called "silicon scraps,” which are remelted to obtain a compact crystalline composition.

What are crystalline silicon solar cells?

In the second chapter, the basic principle of the solar cell is explained. Crystalline silicon solar cells are briefed here. As mentioned, above, crystalline silicon solar cells are PN junction diodes under illumination.