5.8. Structure
Back contact is Ag and absorbing layer is of AlZnO is used in order to prevent diffusion of Ag in case of a-Si. Then the active layer is of Si and a transparent coating is of ITO which is used to collect the carrier and act as antireflection coating. The description of structure is given in Fig. 10[71]. This is the resonant dielectric structure to increase the efficiency of solar cell.