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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Solution-processed high-k dielectrics for improving the performance of flexible intrinsic Ge nanowire transistors: dielectrics screening, interface engineering and electrical properties
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Solution-processed high-k dielectrics for improving the performance of flexible intrinsic Ge nanowire transistors: dielectrics screening, interface engineering and electrical properties

机译:解决方案加工的高k电介质,用于提高柔性固有电气纳米线晶体管的性能:电介质筛选,接口工程和电气性能

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摘要

Although Ge-based CMOS have attracted sustained research interest for scaling beyond the Si CMOS limitation, Ge-based flexible electronics are still rarely discussed. For Ge-based flexible electronics, seeking proper dielectrics-both with excellent dielectric/Ge interface quality and special temperature compatibility with the polymer supports in the manufacturing process-is still the main challenge. In addition, focusing on solution-processed high-k dielectrics instead of vacuum fabrication technology is a particular concern. Here, we report on our systematic efforts to improve the device performance of flexible intrinsic Ge nanowire transistors on a polyimide substrate with solution-processed high-k dielectric films. Firstly, YOx thin film was determined to be the most suitable candidate among various solution-processed high-k dielectrics (ZrOx, HfOx, TiOx, AlOx, YOx and LaOx) due to its most promising electrical properties, surface roughness and process temperature. Secondly, the excellent YOx/Ge interface quality was successfully achieved under optimized conditions with a precursor solution concentration of 0.2 M, an annealing temperature of 500 degrees C and an O-2 annealing atmosphere. Ultimately, benefitting from proper dielectric screening and interface engineering, single intrinsic flexible Ge nanowire transistors were demonstrated, exhibiting excellent operating characteristics comparable to devices on rigid substrates. The devices further show good stability, implying their great potential in flexible electronics.
机译:尽管基于GE的CMOS吸引了超越SI CMOS限制的缩放持续研究兴趣,但基于GE的柔性电子器件仍然很少讨论。对于基于GE的柔性电子器件,寻求适当的电介质 - 既具有优异的电介质/ GE界面质量和特殊的温度兼容,与制造过程中的聚合物支撑件 - 仍然是主要挑战。此外,专注于解决方案加工的高k电介质而不是真空制造技术是特别关注的。在此,我们报告了我们的系统努力,以改善具有溶液加工的高k电介质膜的聚酰亚胺基板上的柔性固有GE纳米线晶体管的装置性能。首先,由于其最有前景的电性能,表面粗糙度和工艺温度,确定了yox薄膜是各种溶液加工高k电介质(ZrOx,HFOX,TiOx,Alox,Yox和Laox)中最合适的候选物。其次,在优化条件下成功实现了优异的yox / Ge界面质量,前体溶液浓度为0.2μm,退火温度为500℃和O-2退火气氛。最终,从适当的介电屏蔽和界面工程中受益,对单一内在柔性GE纳米线晶体管进行说明,表现出与刚性基板上的装置相当的优异操作特性。该器件进一步显示出良好的稳定性,暗示它们在柔性电子器件中的巨大潜力。

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  • 作者单位

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Sch Mat Sci &

    Engn State Key Lab Mat Proc &

    Die &

    Mould Technol Ctr Joining &

    Elect Packaging Wuhan 430074 Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用物理学;
  • 关键词

    solution process; nanowire; flexible electronics; Ge-based devices; high-k dielectrics;

    机译:溶液过程;纳米线;柔性电子;基于GE的设备;高k电介质;

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