Fluorescent materials can be used to enhance the relative efficiency of solar cells. But if by some way we can provoke in the anti-reflection coating of the cell emission of light around the peak of its spectral response, its relative efficiency can highly be improved. In my experiment, I used two amorphous silicon solar cells with glass (SiO2) as anti-reflection coating. The emitting material inside the anti-reflection coating is Eu3+, the ions have been introduced into the anti-reflection coating by means of ion-implantation.