Quantifying the Absorption Onset in the Quantum Efficiency of Emerging Photovoltaic Devices

O.A. acknowledges the financial support from the VDI/VD Innovation + Technik GmbH (Project-title: PV-ZUM), the SAOT funded by the German Research Foundation (DFG) in the framework of the German excellence initiative, and the Horizon 2020 project (grant number 871336-PEROXIS). J.G.C. gratefully acknowledges the financial support of the Deutscher Akademischer Austauschdienst (DAAD) through a doctoral scholarship. C.J.B. acknowledges funding from DFG within INST 90/917-1 FUGG, the SFB 953 (DFG, project no. 182849149) and the IGK 2495 (Energy Conversion Systems—from Materials to Devices). C.J.B. further acknowledges the grants “ELF-PV – Design and development of solution processed functional materials for the next generations of PV technologies” (No. 44–6521a/20/4) and “Solar Factory of the Future” (FKZ 20.2-3410.5-4-5) and the SolTech Initiative by the Bavarian State Government. Open access funding enabled and organized by Projekt DEAL.