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arXiv 2002.07067physics.app-ph
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一种高效的GFET结构

An efficient GFET structure

Giovanni Nastasi, Vittorio Romano

摘要:

一个石墨烯场效应晶体管,其中的有源区是由单层大面积的石墨烯,模拟包括一个完整的二维泊松方程和漂移扩散模型推导出的迁移率的半经典玻尔兹曼方程的直接数值解的电荷传输通过适当的不连续伽辽金方法。石墨烯场效应晶体管中的关键问题是难以固定关断状态,这需要精确校准栅极电压。在本文中,我们提出并模拟了石墨烯场效应晶体管结构,它具有良好的特性曲线类似于传统的(带隙)半导体材料。所介绍的器件具有清晰的截止区,可以作为适用于后硅纳米级电子技术的器件原型。这种特殊的几何结构克服了引发少数电荷电流的问题,为基于大面积单层石墨烯作为有源区中标准半导体的替代物的电子器件的设计提供了一种可行的方法。良好的场效应晶体管的电流与栅极电压的行为,使模拟设备非常有前途的和具有挑战性的情况下,实验。

英文摘要:

A graphene field effect transistor, where the active area is made of monolayer large-area graphene, is simulated including a full 2D Poisson equation and a drift-diffusion model with mobilities deduced by a direct numerical solution of the semiclassical Boltzmann equations for charge transport by a suitable discontinuous Galerkin approach. The critical issue in a graphene field effect transistor is the difficulty of fixing the off state which requires an accurate calibration of the gate voltages. In the present paper we propose and simulate a graphene field effect transistor structure which has well-behaved characteristic curves similar to those of conventional (with gap) semiconductor materials. The introduced device has a clear off region and can be the prototype of devices suited for post-silicon nanoscale electron technology. The specific geometry overcomes the problems of triggering the minority charge current and gives a viable way for the design of electron devices based on large area monolayer graphene as substitute of standard semiconductors in the active area. The good field effect transistor behavior of the current versus the gate voltage makes the simulated device very promising and a challenging case for experimentalists.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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