LOCAL DOPING OF TWO-DIMENSIONAL MATERIALS

摘要

This disclosure provides systems, methods, and apparatus related to locally doping two-dimensional (2D) materials. In one aspect, an assembly including a substrate, a first insulator disposed on the substrate, a second insulator disposed on the first insulator, and a 2D material disposed on the second insulator is formed. A first voltage is applied between the 2D material and the substrate. With the first voltage applied between the 2D material and the substrate, a second voltage is applied between the 2D material and a probe positioned proximate the 2D material. The second voltage between the 2D material and the probe is removed. The first voltage between the 2D material and the substrate is removed. A portion of the 2D material proximate the probe when the second voltage was applied has a different electron density compared to a remainder of the 2D material.

主权项

1. A method comprising:
(a) forming an assembly including a substrate, a first insulator disposed on the substrate, a second insulator disposed on the first insulator, and a two-dimensional (2D) material disposed on the second insulator; (b) applying a first voltage between the 2D material and the substrate; (c) with the first voltage applied between the 2D material and the substrate, applying a second voltage between the 2D material and a probe positioned proximate the 2D material; (d) removing the second voltage between the 2D material and the probe; and (e) removing the first voltage between the 2D material and the substrate, a portion of the 2D material proximate the probe in operation (c) having a different electron density compared to a remainder of the 2D material.