Physical power sources Section Ill Fundamentals of Solar Cell
Section III Fundamentals of Solar Cell Physical power sources
Physical power sources Single crystalline (se-Si) Crystalline Bulk (Bulk) Polycrystalline (poly-Si) (Heterojunction with intrinsic HIT thin-layer) Silicon(Si)type Amorphous (Si,Si Alloy,Sige,SiC,etc.) (a-Si) ue-Si licrocrystallin Thin Film (uc-Si) a-Siluc-Si Single Crystalline (GaAs type,ete.) Solar cells ompound typ Thin Film (CulnSe2 CulnGaSez Polycrystalline CdS,CdTe,ete.) Wet type Dye- sensitized Organic type Solid type Thin film Already commercialized (Solid type) (a)Schottky junction type (organic/metal) Partially commercialized (b)Organic heterojunction (two-layer)type Under development (c)Donor/acceptor composite film (one-layer)type (d)MAolecular davice tune
Physical power sources
Solar cell-monocrystal silicon Energy gap:1.12eV CE:19% Covalent bond Regular tetrahedron Diamond-structure
Solar cell- monocrystal silicon Energy gap: 1.12eV CE: 19% Covalent bond Regular tetrahedron Diamond-structure
Polycrystalline silicon solar cell CE:18% The manufacturing process of polycrystalline silicon solar cells is similar to that of single crystal silicon solar cells.Its photoelectric conversion efficiency is about 12%,which is slightly lower than that of single crystal silicon solar cells.Substantial development.With the improvement of technology,the conversion efficiency of polysilicon can now reach about 18%
Polycrystalline silicon solar cell CE: 18% The manufacturing process of polycrystalline silicon solar cells is similar to that of single crystal silicon solar cells. Its photoelectric conversion efficiency is about 12%, which is slightly lower than that of single crystal silicon solar cells. Substantial development. With the improvement of technology, the conversion efficiency of polysilicon can now reach about 18%
Amorphous silicon solar cells CE:10% (c) Amorphous silicon solar cell is a new type of thin film solar cell that appeared in 1976.It is completely different from the manufacturing method of single crystal silicon and polycrystalline silicon solar cells.The process is greatly simplified. The advantage is that it can generate electricity in low light conditions.However, the main problem of amorphous silicon solar cells is that the photoelectric conversion efficiency is low.At present,the international advanced level is about 10%,and it is not stable enough.As time goes by,its conversion efficiency decays
Amorphous silicon solar cells CE:10% Amorphous silicon solar cell is a new type of thin film solar cell that appeared in 1976. It is completely different from the manufacturing method of single crystal silicon and polycrystalline silicon solar cells. The process is greatly simplified. The advantage is that it can generate electricity in low light conditions. However, the main problem of amorphous silicon solar cells is that the photoelectric conversion efficiency is low. At present, the international advanced level is about 10%, and it is not stable enough. As time goes by, its conversion efficiency decays