Fig. 2: The characteristic of ETPB ferroelectric materials. | Nature Communications

Fig. 2: The characteristic of ETPB ferroelectric materials.

From: Polarity-dependent ferroelectric modulations in two-dimensional hybrid perovskite heterojunction transistors

Fig. 2: The characteristic of ETPB ferroelectric materials.

a The top view and side view structure of ETPB, showing the spontaneous polarization along the b-axis is due to the ordered alignment of C-N bonds in each EATMP cation. b The XRD patterns of simulated results from single crystal structure results, as synthesized samples and the spin-coated thin films. c The schematic of the tilted-oriented ETPB in the thin film. Panels d and e show the box-in-box out-of-plane (OOP) phase switch of the ferroelectric thin film driven by the tip bias, confirming the OOP FE field switch. The scale bar in each image is 6 μm.

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