Highly Reflective Dielectric Back Reflector for Improved Efficiency of Tandem Thin-Film Solar Cells

Figure 2

External quantum efficiency (EQE) (left -axis) and absorptance () (right -axis) of the a-Si:H top solar cell and μc-Si:H bottom solar cell with ZnO:Al/Ag reflector (black dash line) and SGC reflector (red solid line).