Ultra-lightweight and flexible inverted metamorphic four junction solar cells for space applicationsMalte Klitzke, Jonas Schön, Rosalinda H. Van Leest, Gunther M.M.W. Bissels, Elias Vlieg, Michael Schachtner, Frank Dimroth and David LacknerEPJ Photovolt., 13 (2022) 25DOI: https://doi.org/10.1051/epjpv/2022024