Highly sensitive hot electron bolometer based on disordered graphene

Scientific Reports
Qi HanDapeng Yu

Abstract

A bolometer is a device that makes an electrical resistive response to the electromagnetic radiation resulted from a raise of temperature due to heating. The combination of the extremely weak electron-phonon interactions along with its small electron heat capacity makes graphene an ideal material for applications in ultra-fast and sensitive hot electron bolometer. However, a major issue is that the resistance of pristine graphene weakly depends on the electronic temperature. We propose using disordered graphene to obtain a strongly temperature dependent resistance. The measured electrical responsivity of the disordered graphene bolometer reaches 6 × 10(6) V/W at 1.5 K, corresponding to an optical responsivity of 1.6 × 10(5) V/W. The deduced electrical noise equivalent power is 1.2 fW/√Hz, corresponding to the optical noise equivalent power of 44 fW/√Hz. The minimal device structure and no requirement for high mobility graphene make a step forward towards the applications of graphene hot electron bolometers.

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Citations

Oct 16, 2015·Nano Letters·Allen L HsuTomás Palacios
Nov 16, 2017·Scientific Reports·Grigory SkoblinAugust Yurgens
Jan 5, 2016·Nature Nanotechnology·Abdel El FatimyPaola Barbara
Sep 6, 2017·Scientific Reports·R SomphonsaneJ P Bird
Oct 7, 2015·Scientific Reports·Xinghan CaiMichael S Fuhrer
Oct 7, 2014·Nature Nanotechnology·F H L KoppensM Polini
Jul 10, 2019·Advanced Materials·Xiaoqing ChenXinran Wang
Dec 23, 2017·Advanced Science·Hehai Fang, Weida Hu
Jun 13, 2018·Nature Nanotechnology·Dmitri K EfetovDirk Englund
Jul 26, 2017·Scientific Reports·Woosung ParkKenneth E Goodson
Oct 2, 2020·Nature·Gil-Ho LeeKin Chung Fong
Nov 25, 2018·Optics Express·Edgar BrionesGregorio Alvarez-Alvarez
Nov 9, 2017·Scientific Reports·Stephen W HowellThomas E Beechem
Nov 13, 2015·Optics Express·Martin MittendorffStephan Winnerl

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