Fig. 2: Studies on the electric-field in a CF3-PBAPy monolayer. | Nature Communications

Fig. 2: Studies on the electric-field in a CF3-PBAPy monolayer.

From: Confining iodide migration with quantified barrier for durable perovskite solar cells

Fig. 2: Studies on the electric-field in a CF3-PBAPy monolayer.

a Spatial distribution of the electrostatic potential of the CF3-PBAPy molecule. b Kelvin probe force microscopy (KPFM) images of perovskite, perovskite/HfO2 and perovskite/HfO2/CF3-PBAPy films. The Rq value is the root mean square of the surface potential. Scale bar is 1 μm. c Changes of work function after depositing HfO2/CF3-PBAPy layer based on the parameters derived from KPFM images.

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