Single-Crystal High-κ Dielectric Enables Ultra-Low-Power 2D CFETs

At a glance

Researchers from the National University of Singapore and Nexstrom built very low-power CFETs (complementary field-effect transistors) using a single-crystal titanium dioxide insulator with 2D semiconductors. The work was published in Nature.

Key points

1. 1

   The team used a wafer-scale single-crystal anatase titanium dioxide film as the insulator on 2D semiconductors.

2. 2

   Switching behavior came close to the thermal limit, with record-low hysteresis (lingering memory of prior states).

3. 3

   Inverters built from the devices showed high voltage gain, large noise margins, and static power below a picowatt.

Why it matters

It could greatly cut chip power use, making it an important step for next-generation semiconductor materials.”