solar_cell PpLdpe atomic_steps MembraneFilter Bmp ThinFilm TransitionMetal Litho Scanning_Thermal_Microscopy Polyvinylidene_fluoride PvdfFilm EPFL CuFoil Inorganic Vinylpyridine LeakageCurrent Neodymium MonoLayer Electrode Friction Plug CuSubstrate Wonseok AM_SKPM Perovskite AnodizedAluminumOxide ConductingPolymer YttriaStabilizedZirconia temperature controller AFM Microchannel Ceramics ScanningTunnelingMicroscopy FAPbI3 BariumTitanate ScanningThermalMicroscopy