Modulation characteristics of graphene-based thermal emitters
Mahlmeister, NH; Lawton, LM; Luxmoore, IJ; et al.Nash, GR
Date: 16 December 2015
Article
Journal
Applied Physics Express
Publisher
Japan Society of Applied Physics/ IOP Publishing
Publisher DOI
Abstract
© 2016 The Japan Society of Applied Physics. We have investigated the modulation characteristics of the emission from a graphene-based thermal emitter both experimentally and through simulations using finite element method modelling. Measurements were performed on devices containing square multilayer graphene emitting areas, with the ...
© 2016 The Japan Society of Applied Physics. We have investigated the modulation characteristics of the emission from a graphene-based thermal emitter both experimentally and through simulations using finite element method modelling. Measurements were performed on devices containing square multilayer graphene emitting areas, with the devices driven by a pulsed DC drive current over a range of frequencies. Simulations show that the dominant heat path is from the emitter to the underlying substrate, and that the thermal resistance between the graphene and the substrate determines the modulation characteristics. This is confirmed by measurements made on devices in which the emitting area is encapsulated by hexagonal boron nitride.
Engineering
Faculty of Environment, Science and Economy
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