Radio frequency signal detection by ballistic transport in Y-shaped graphene nanoribbons

TL;DR

This paper presents a graphene-based high-frequency signal detector utilizing ballistic transport, demonstrating superior frequency response and sensitivity up to 50GHz at room temperature.

Contribution

It introduces a novel graphene nanoribbon device that outperforms previous carbon detectors and rivals Schottky detectors in dynamic range.

Findings

Linear response in power range -40dBm to 0dBm

Sensitivity as high as 10 V/W

Detects signals up to 50GHz with peak at 10GHz

Abstract

We report on the fabrication and room temperature measurements of a high frequency electrical signal detector. The device is based on the ballistic transport in graphene to detect a high frequency signal. The observed response is linear in the considered power range (-40dBm - 0dBm) and exhibits a sensitivity as high as 10 Volts/Watt. Finally the device detected signals up to 50GHz with a maximum response at 10GHz. This device outperforms any previously reported carbon based detectors in frequency response and compares to current state of the art Schottky based detectors in dynamic range.