Research / 2021 / Article / Fig 4

Research Article

Electron-Beam Irradiation Induced Regulation of Surface Defects in Lead Halide Perovskite Thin Films

Figure 4

The mechanism for the regulation of surface defects of MAPI films via e-beam irradiation. (a) Calculated activation energies for I ion displacement () on perfect slab and slab, for I1 and I2 are 4.05 eV and 3.49 eV. (b) A schematic illustration for the regulation of surface defects, e-beam induced thinning of MAPI films through knock-on assisted by surface defects.