The effect of annealing temperature on Cu2ZnGeSe4 thin films and solar cells grown on transparent substrates

This work was supported by Spanish Ministry of Science, Innovation and Universities Project WINCOST (ENE201680788-C5-2-R), -Project RTI (2018-096498-B-I00, AEI/MICINN/ERDF) and European Project INFINITE CELL (H2020-MSCA-RISE-2017-777968). Authors from IREC belong to the SEMS (Solar Energy Materials and Systems) Consolidated Research Group of the ‘Generalitat de Catalunya’ (Ref 2017 SGR 862). MGP also acknowledges funding from AEI/MICINN (PTA2019-016763-I). The authors acknowledge the service from the MiNa Laboratory at IMN-CSIC, and funding from CM (project S2018/NMT-4291 TEC2SPACE), MINECO (project CSIC13-4E-1794) and European Union (FEDER, FSE)