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Perfecting the Al2O3/In0.53Ga0.47As interfacial electronic structure in pushing metal-oxide-semiconductor field-effect-transistor device limits using in-situ atomic-layer-deposition
Applied Physics Letters ( IF 4 ) Pub Date : 2017-09-18 , DOI: 10.1063/1.5003616
M. Hong, H. W. Wan, K. Y. Lin, Y. C. Chang, M. H. Chen, Y. H. Lin, T. D. Lin, T. W. Pi, J. Kwo

We performed interfacial electric and electronic studies of both in-situ and ex-situ atomic-layer deposited (ALD) Al2O3 films on InGaAs. Self-aligned inversion-channel metal-oxide-semiconductor field-effect-transistors (MOSFETs) with a 1 μm gate length (Lg) from the in-situ sample have extrinsic drain currents (Id) of 1.8 mA/μm, transconductances (Gm) of 0.98 mS/μm, and an effective mobility (μeff) of 1250 cm2/V s. MOSFETs that employ ex-situ ALD-Al2O3 have an Id of 0.56 mA/μm, Gm of 0.28 mS/μm, and μeff of 410 cm2/V s. Synchrotron radiation photoemission reveals no AsOx residue at the Al2O3/InGaAs interface using the in-situ approach, whereas some AsOx residue is detected using the ex-situ method.

中文翻译:

利用原位原子层沉积完善Al2O3/In0.53Ga0.47As界面电子结构以推动金属氧化物半导体场效应晶体管器件极限

我们对 InGaAs 上的原位和异位原子层沉积 (ALD) Al2O3 薄膜进行了界面电气和电子研究。来自原位样品的栅极长度 (Lg) 为 1 μm 的自对准反转沟道金属氧化物半导体场效应晶体管 (MOSFET) 的外源漏电流 (Id) 为 1.8 mA/μm,跨导 (Gm) ) 为 0.98 mS/μm,有效迁移率 (μeff) 为 1250 cm2/V s。采用异位 ALD-Al2O3 的 MOSFET 的 Id 为 0.56 mA/μm,Gm 为 0.28 mS/μm,μeff 为 410 cm2/V s。同步辐射光电发射显示使用原位方法在 Al2O3/InGaAs 界面上没有 AsOx 残留物,而使用非原位方法检测到一些 AsOx 残留物。
更新日期:2017-09-18
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