Transport Properties of Thin-Film Passivating Contacts for Silicon Solar Cells

This work investigates the transport properties of silicon-based solar cells using dedicated test structures. The transport losses are significantly reduced by tailoring the interfaces in the contact stack, taking into account the trade-off between transport and passivation. With respect to tandem solar cells, a tunneling recombination junction is developed as sub-cell interconnection, focusing on industrial feasibility with the use of a lean process sequence and exploiting synergy effects with mainstream technology.