A solar cell assembly and method are disclosed. The solar cell assembly comprises a substrate having a front surface and a back surface, wherein the substrate has a p-n junction providing reverse bias protection, and wherein the substrate functions as a bypass diode. The solar cell assembly further comprises a multijunction solar cell having a plurality of solar cell layers, wherein the multijunction solar cell has a first surface and a second surface, the first surface being attached to the front surface of the substrate. The solar cell assembly further comprises an electrical connector element positioned adjacent the front surface of the substrate and the first surface of the multijunction solar cell, a first contact coupled to the back surface of the substrate, and at least one second contact coupled to a portion of the second surface of the multijunction solar cell.