Patent ID: 8912433

Claim:
A method for manufacturing a multijunction solar cell comprising: forming a first subcell comprising Ga 1-x In x N y As 1-y-z Sb z , wherein, the content levels are selected to achieve a bandgap from 0.9 eV to 1.1 eV; the content values for x, y, and z are within composition ranges as follows: 0.07≦x≦0.18, 0.025≦y≦0.04 and 0.001≦z≦0.03; the first subcell is characterized by a short circuit current Jsc greater than 13 mA/cm 2 and an open circuit voltage Voc greater than 0.3 V when illuminated with a filtered 1 sun AM1.5D spectrum in which all light having an energy greater than the bandgap of GaAs is blocked; and forming at least one second subcell overlying the first subcell to form the multijunction solar cell.