Solar cell material

why can't we try a solar cell material by plating soft ferrite material over Gallium arsenide thin film. Aluminium and ferrite material is coated over semiconductor junction just like a grating. This design may enhance the charge capacity of solar cell module. Soft ferrite material can be synthesized by highly toxic gel liquid methods. For coating we cannot use liquid dipping method, spray pyrolisis method or vacuum evaporation method. Best mean is to use magnetic sputtering method. But conditions and precautions are problems-that can be fixed by trial and error methods. Once prepared samples be heat treated to make it crystalline. Crystalline samples are easy to characterize. We cannot predict the use untill we obtain an efficient and pure solar cell module.