Fast and Highly Sensitive Ionic‐Polymer‐Gated WS<sub>2</sub>–Graphene Photodetectors
Fast and Highly Sensitive Ionic‐Polymer‐Gated WS<sub>2</sub>–Graphene Photodetectors
The combination of graphene with semiconductor materials in heterostructure photodetectors enables amplified detection of femtowatt light signals using micrometer-scale electronic devices. Presently, long-lived charge traps limit the speed of such detectors, and impractical strategies, e.g., the use of large gate-voltage pulses, have been employed to achieve bandwidths suitable for applications …