Patent ID: 8034654

Claim:
A method for forming a solar cell battery on a silicon substrate by using a Si + ion implantation method, comprising: providing a P-type silicon substrate; forming a Si + ion implantation layer on the P-type silicon substrate by using the Si + ion implantation method; forming a doping p + SiGe buffer layer on the Si + implantation layer by using a Ultra High Vacuum Chemical Vapor Deposition at twice; forming a doping p + Ge layer on the doping p + SiGe buffer layer by using a Ultra High Vacuum Chemical Vapor Deposition; forming an InGaAs layer on the Ge layer by using a Metal Organic Chemical Vapor Deposition: forming an InGaP layer on the InGaAs layer, forming a n − GaAs layer on the InGaP layer; forming a p + GaAs layer on the n − GaAs layer; forming an InGaAlP layer on the p + GaAs layer; and depositing a SiN covering layer on the InGaAlP layer in order to form the solar cell battery.