Silicon-based solar cells Characteristics and production processes ...

Silicon-based solar cells – characteristics and production processes
Fig. 10. Scheme of a solar cell with a given thickness value of particular construction
elements.
Most of the global producers manufacture crystalline silicon solar cells with the
technological process schematically presented in Figure 11. The applied base material
are boron-doped monocrystalline silicon plates Cz-Si, type p, 200 µm thick, with the
surface crystallographic orientation of (100), the resistivity of ~ 1 Ωcm and the charge
carrier lifetime of τ ~ 20 µs. In the case of polycrystalline plates, the value of τ is
usually lower, the crystallographic orientation is determined by the orientation
of particular grains, and the remaining parameters are identical with those of the Cz-
Si plates.
Fig. 11. Scheme of the technological process of silicon solar cell production.
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