The diffusion of nitrogen into the surface layers of low carbon steels at elevated temperature. The formation of nitrides in the surface layer creates.
There are no FREE lunches. Anti-reflective coating A anti-reflective coating is deposited on the top side to help transmit more of the incident sunlight.
Be careful what you wish for. SiO2 backside protection A coating of SiO2 is deposited on the backside of the wafer to insolate it from the doping process.