N Type 166mm Monocrystalline Solar Silicon Wafer for Solar Cell

The fact that cell technologies featuring the highest efficiencies in industrial production are based on N type Cz-Si wafer is a striking demonstration of why n-type wafers are the most suitable material for high-efficiency solar cells.

Getting into more details, there are some physical reasons for the superiority of N type versus P type, the most important are:

• due to absence of boron, there is no light induced degradation (LID) occurring in p-type Si wafers, due to boron-oxygen complexes

• as N type Si is less sensitive to prominent metallic impurities, in general the minority carrier diffusion lengths in n-type Cz-Si are significantly higher compared to p-type Cz-Si

• N type Si is less prone to degradation during high temperature processes such as B-diffusion.