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Graphene as a novel single photon counting optical and IR photodetector
conference contributionposted on 2015-07-10, 08:51 authored by J. O. D. Williams, J. S. Lapington, M. Roy, I. B. Hutchinson
Bilayer graphene has many unique optoelectronic properties , including a tuneable band gap, that make it possible to develop new and more efficient optical and nanoelectronic devices. We have developed a Monte Carlo simulation for a single photon counting photodetector incorporating bilayer graphene. Our results show that, conceptually it would be feasible to manufacture a single photon counting photodetector (with colour sensitivity) from bilayer graphene for use across both optical and infrared wavelengths. Our concept exploits the high carrier mobility and tuneable band gap associated with a bilayer graphene approach. This allows for low noise operation over a range of cryogenic temperatures, thereby reducing the cost of cryogens with a trade off between resolution and operating temperature. The results from this theoretical study now enable us to progress onto the manufacture of prototype photon counters at optical and IR wavelengths that may have the potential to be groundbreaking in some scientific research applications.
Simulations were performed using the SPECTRE High Performance Computer at the University of Leicester. Jamie Williams is funded by STFC.
CitationGraphene-Based Technologies, 2015 page 02 (5 .)
Author affiliation/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy
SourceGraphene-based Technologies 2015, London, UK
- AM (Accepted Manuscript)
Published inGraphene-Based Technologies
PublisherThe Institution of Engineering and Technology (IET)
Temporal coverage: start date2015-02-20
Temporal coverage: end date2015-02-20
cryogenicscarrier mobilityphotodetectorsinfrared detectorsphoton countinggrapheneenergy gapMonte Carlo methodsPhotodetectorsFullerenenanotube and related devicesDetection of radiation (bolometers, photoelectric cells, i.r. and submillimetre waves detection)Bilayer GrapheneSingle PhotonOpticalImpact Ionisation