Susanne Siebentritt

Nanoscale Rear‐Interface Architecture Enables 36.2 mA cm −2 Photocurrent in Ultrathin and Bifacial ACIGS Solar Cells Through Light Management

ABSTRACT Reducing the absorber thickness in thin‐film photovoltaics has a direct impact on low raw material consumption and high manufacturing throughput. However, it leads to low optical performance due to incomplete light absorption. In (Ag,Cu)(In,Ga)Se 2 (ACIGS)‐based technolo...

Loss Analysis of Low Bandgap (Ag,Cu)(In,Ga)Se 2 Solar Cells for Tandem Applications

ABSTRACT Tandem solar cells can better harness the energy of the solar spectrum. Chalcopyrite solar cells have drawn attention, being the only highly efficient devices with a bandgap around 1.0 eV, suitable for bottom cells. In the quest for better efficiencies, we conduct a comp...