Thickness-Independent Energy Dissipation in Graphene Electronics,ACS Applied Materials & Interfaces

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Thickness-Independent Energy Dissipation in Graphene Electronics
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-03 , DOI: 10.1021/acsami.0c00113
Yuehua Wei ₁ , Renyan Zhang _{1,

2,

3} , Yi Zhang ₄ , Xiaoming Zheng _{4,

5} , Weiwei Cai _{5,

6} , Qi Ge ₆ , Kostya S. Novoselov _{6,

7} , Zhongjie Xu ₁ , Tian Jiang ₁ , Chunyun Deng ₄ , Xueao Zhang _{5,

6} , Shiqiao Qin ₁

Affiliation

The energy dissipation issue has become one of the greatest challenges of the modern electronic industry. Incorporating graphene into the electronic devices has been widely accepted as a promising approach to solve this issue, due to its superior carrier mobility and thermal conductivity. Here, using Raman spectroscopy and infrared thermal microscopy, we identify the energy dissipation behavior of graphene device with different thicknesses. Surprisingly, the monolayer graphene device is demonstrated to have a comparable energy dissipation efficiency per unit volume with that of a few-layer graphene device. This has overturned the traditional understanding that the energy dissipation efficiency will reduce with the decrease of functional materials dimensions. Additionally, the energy dissipation speed of the monolayer graphene device is very fast, promising for devices with high operating frequency. Our finding provides a new insight into the energy dissipation issue of two-dimensional materials devices, which will have a global effect on the development of the electronic industry.

中文翻译：

石墨烯电子中与厚度无关的能量耗散

能耗问题已成为现代电子工业的最大挑战之一。由于石墨烯具有优异的载流子迁移率和导热性，因此将石墨烯掺入电子设备已被公认为解决该问题的一种有前途的方法。在这里，使用拉曼光谱和红外热显微镜，我们确定了不同厚度的石墨烯器件的能量耗散行为。令人惊讶地，单层石墨烯器件被证明具有与几层石墨烯器件相当的每单位体积的能量耗散效率。这就颠覆了传统的认识，即随着功能材料尺寸的减小，能量消耗效率将降低。此外，单层石墨烯器件的能量耗散速度非常快，对于高工作频率的设备很有希望。我们的发现为二维材料器件的能量耗散问题提供了新的见解，这将对电子行业的发展产生全球影响。

更新日期：2020-04-03

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