Difference analysis between crystalline silicon battery and thin film battery

1. Introduction of crystalline silicon components (polysilicon)

Polycrystalline silicon photovoltaic modules are composed of glass, EVA, solar cells, backplanes and solar panels (as shown in Figure 2). Due to the reasonable price and good performance of polysilicon modules, they have a relatively large share in the market.

At present, the conversion efficiency of polycrystalline silicon modules is about 15%, which is slightly lower than that of monocrystalline silicon products, but higher than that of amorphous silicon modules. Polycrystalline silicon cells have no photodegradation effect, and slight material quality differences will not cause solar cells to be affected. However, there is a certain difference in the single-chip power of polycrystalline silicon cells, and there is a certain difference in the power of modules with the same area (usually there is a difference of 20Wp-30Wp). Another advantage of polycrystalline silicon cells is that high and stable power generation performance can be obtained per unit area. The current nominal life of polysilicon modules is 25 years.