The Electronic Structure of MAPI‐Based Perovskite Solar Cells: Detailed Band Diagram Determination by Photoemission Spectroscopy Comparing Classical and Inverted Device Stacks. - Hellmann, Tim; Das, Chittaranjan; Abzieher, Tobias; Schwenzer, Jonas A.; Wussler, Michael; Dachauer, Ralph; Paetzold, Ulrich W.; Jaegermann, Wolfram; Mayer, Thomas (Advanced Energy Materials, 2020)