Modulation characteristics of graphene-based thermal emitters
Modulation characteristics of graphene-based thermal emitters
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石墨烯基热发射体的调制特性
DOI：
10.7567/apex.9.012105
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发表时间：
2015
影响因子：
2.3
通讯作者：
G. Nash
中科院分区：
文献类型：
--
作者：
N. H. Mahlmeister;L. Lawton;I. Luxmoore;G. Nash
我们已经调查了调制特性的发射从石墨烯为基础的热发射器的实验和通过模拟使用有限元方法建模。在包含正方形多层石墨烯发射区域的装置上进行测量，其中所述装置在一定频率范围内由脉冲DC驱动电流驱动。模拟表明，主要的热路径是从发射器到下面的衬底，并且石墨烯和衬底之间的热阻决定了调制特性。这是证实了由测量设备中的发射区是由六方氮化硼封装。
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.
影响因子：
1.6
作者：
Lawton, L. M.;Mahlmeister, N. H.;Nash, G. R.
通讯作者：
Nash, G. R.