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arXiv 1303.3755cond-mat.mes-hall
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单壁碳纳米管和硅纳米线无结晶体管的第一性原理分析

First Principle-based Analysis of Single-Walled Carbon Nanotube and Silicon Nanowire Junctionless Transistors

Lida Ansari, Baruch Feldman, Giorgos Fagas, Carlos Martinez Lacambra, Michael G. Haverty, Kelin J. Kuhn, Sadasivan Shankar, James C. Greer

摘要:

由硅制成的无结晶体管以前已经通过实验和模拟得到了证明。无结器件不需要制造突变的源极-漏极结,因此可以更容易地在侵蚀性几何形状中实现。在本文中,我们探讨了一个类似的架构,积极规模的设备与掺杂的碳纳米管(CNT)组成的通道。研究了n型和p型掺杂的栅全包围(GAA)场效应晶体管(FET)结构。基于CNT的无结FET的电流-电压特性和亚阈值特性与具有可比尺寸的无结硅纳米线(SiNW)FET进行比较。尽管CNT沟道的导通电流较高,但由于CNT带隙较小,与硅器件相比,器件特性较差。

英文摘要:

Junctionless transistors made of silicon have previously been demonstrated experimentally and by simulations. Junctionless devices do not require fabricating an abrupt source-drain junction and thus can be easier to implement in aggressive geometries. In this paper, we explore a similar architecture for aggressively scaled devices with the channel consisting of doped carbon nanotubes (CNTs). Gate all around (GAA) field effect transistor (FET) structures are investigated for n- and p-type doping. Current-voltage characteristics and sub-threshold characteristics for a CNTbased junctionless FET is compared with a junctionless silicon nanowire (SiNW) FET with comparable dimensions. Despite the higher on-current of the CNT channels, the device characteristics are poorer compared to the silicon devices due to the smaller CNT band gap.

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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