Fig. 2: Mechanical analysis of substrate-perovskite interfaces.
From: Perovskite solar cells with enhanced thermal fatigue resistance under extreme temperature cycling

a Schematic representation of the HTL contact formed by 4PADCB together with LA, DHLA, and DMSLA at the ITO/perovskite interface. b Sketch for the test setup used for the pull-off test. c Maximum adhesion strength, and d stress values, which are determined from the highest value in each of the four groups. e The interaction energies between perovskite and the linker molecules, calculated using a computer-based DFT approach. f Interactions between perovskite and the molecules.