Figure 3

SEM images of MBI films deposited at 88 °C substrate temperature, a BiI3 rate of 0.5 nm/min and different MAI/BiI3 rate ratios of 3, 5 and 8. The insets show the macroscopic appearances (photography, 2.5 cm × 2.5 cm).

SEM images of MBI films deposited at 88 °C substrate temperature, a BiI3 rate of 0.5 nm/min and different MAI/BiI3 rate ratios of 3, 5 and 8. The insets show the macroscopic appearances (photography, 2.5 cm × 2.5 cm).