Thermally Stable Multi-Phase Nickel-Platinum Stanogermanide Contacts for Germanium-Tin Channel MOSFETs

Thermally Stable Multi-Phase Nickel-Platinum Stanogermanide Contacts for Germanium-Tin Channel MOSFETs
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用于锗锡通道 MOSFET 的热稳定多相镍铂锗化物触点

DOI:
10.1149/2.014206esl
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发表时间:
2012
期刊:
Electrochemical and Solid-state Letters
影响因子:
--
通讯作者:
Yeo, Yee-Chia
Yeo, Yee-Chia
中科院分区:
其他
文献类型:
--
作者:
Xue, Chunlai;Wang, Qiming;Cheng, Buwen;Yeo, Yee-Chia

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我们展示了一种新的金属锡锗化物接触金属化工艺的高迁移率锗锡(GeSn)沟道MOSFET。采用固体源分子束外延(MBE)技术在Ge(100)衬底上外延生长Ge0.947Sn0.053合金,再与Ni-Pt合金反应,制备了多相镍铂锡锗化物[Ni(GeSn)+Ptx(GeSn)y]接触。与锡锗酸镍[Ni(GeSn)]接触相比,Pt掺入的接触,即[Ni(GeSn)+Ptx(GeSn)y],在宽的形成温度范围内表现出增强的热稳定性,并且即使在热处理后也具有上级表面形貌。所提出的接触是有吸引力的高迁移率GeSn MOSFET的集成。
We demonstrate a novel metal stanogermanide contact metallization process for high mobility germanium-tin (GeSn) channel MOSFETs. The multi-phase nickel-platinum stanogermanide [Ni(GeSn)+Ptx(GeSn)y] contacts are formed by reacting Ni-Pt alloy with Ge0.947Sn0.053 alloy, which is epitaxially grown on Ge (100) substrate by solid source molecular beam epitaxy (MBE). Compared with nickel stanogermanide [Ni(GeSn)] contacts, the Pt-incorporated contacts, i.e. [Ni(GeSn)+Ptx(GeSn)y], exhibit enhanced thermal stability in a wide range of formation temperatures and have superior surface morphology even after thermal processing. The proposed contacts are attractive for the integration in high mobility GeSn MOSFETs.
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