arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1502.04223cond-mat.mes-hall
收藏

磷光体隧道场效应晶体管的理论研究

Theoretical Study of Phosphorene Tunneling Field Effect Transistors

Jiwon Chang, Chris Hobbs

摘要:

本工作通过自洽原子量子输运模拟研究了基于磷烯的隧穿场效应晶体管的器件性能。Phosphorene是一种超薄的二维(2-D)材料,具有直接带隙,适用于TFT应用。我们的模拟结果表明,磷烯TFTs表现出低于60 mV/dec的亚阈值斜率(SS)和宽范围的导通电流取决于输运方向,由于磷烯的高度各向异性能带结构。通过与单层MoTe 2 TFR 4的基准测试,我们预测磷烯TFR 4在小有效质量方向上取向可以在相同的导通电流/截止电流比下产生比单层MoTe 2 TFR 4大得多的导通电流。还观察到,需要栅极下重叠结构来在小有效质量方向上按比例缩小磷烯TFm,以抑制源极到漏极的直接隧穿漏电流。

英文摘要:

In this work, device performances of tunneling field effect transistors (TFETs) based on phosphorene are explored via self-consistent atomistic quantum transport simulations. Phosphorene is an ultra-thin two-dimensional (2-D) material with a direct band gap suitable for TFETs applications. Our simulation shows that phosphorene TFETs exhibit subthreshold slope (SS) below 60 mV/dec and a wide range of on-current depending on the transport direction due to highly anisotropic band structures of phosphorene. By benchmarking with monolayer MoTe2 TFETs, we predict that phosphorene TFETs oriented in the small effective mass direction can yield much larger on-current at the same on-current/off-current ratio than monolayer MoTe2 TFETs. It is also observed that a gate underlap structure is required for scaling down phosphorene TFETs in the small effective mass direction to suppress the source-to-drain direct tunneling leakage current.

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。

↑