Front Cover: Performance and Stability of Polymer : Nonfullerene Solar Cells with 100 °C‐Annealed Electron‐Collecting Combination Layers (ChemSusChem 17/2021)

The Front Cover shows generation of electricity in polymer solar cells with hybrid combination layers (ZnO:PEOz/PEOz), which are thermally annealed at a low temperature (100 °C) but work excellently, leading to high power conversion efficiency and device stability. The electricity generated from the present solar cells is provided by grid systems for consumers including buildings, cars, people, etc. More information can be found in the Full Paper by W. Lee, H. Kim, et al.