Under CopyrightGlunz, StefanWöllenstein, JürgenLuderer, ChristophChristophLuderer2022-05-182022-05-182022978-3-8396-1781-6https://publica.fraunhofer.de/handle/publica/41766610.24406/publica-r-417666This 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.enAlternative and renewable energy sources and technologyEnergy conversion and storageEnergy efficiencyDDC::600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaftendoctoral thesis