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Semiconductors01:22

Semiconductors

There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...

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Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
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晶圆尺度的石墨烯集成电路

Yu-Ming Lin1, Alberto Valdes-Garcia, Shu-Jen Han

  • 1IBM Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA. yming@us.ibm.com

Science (New York, N.Y.)
|June 11, 2011
PubMed
概括

一个新的晶圆尺度的石墨烯电路集成了碳化上的晶体管和电感器. 这种宽带无线电频率混合器运行高达10GHz,并显示出出色的热稳定性,为先进的石墨烯电子铺平了道路.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电气工程 电气工程
  • 纳米技术纳米技术

背景情况:

  • 石墨烯的独特电子特性为先进的集成电路提供了潜力.
  • 不同电路组件在单个基板上的单体集成仍然是一个挑战.

研究的目的:

  • 为了展示一个晶圆尺度的石墨烯电路与单体集成组件.
  • 为了评估集成射频混合器的性能和热稳定性.

主要方法:

  • 制造晶圆尺度的石墨烯电路,包括石墨烯场效应晶体管和电感器.
  • 所有组件的单体集成到单个碳化晶圆上.
  • 描述电路的性能作为一个宽带无线电频混合器高达10GHz.

主要成果:

  • 成功演示了一个晶圆尺度的石墨烯电路,其中所有组件都集成.
  • 该电路作为一个宽带无线电频混合器,在高达10千兆赫的频率上运行.
  • 显示出出色的热稳定性,性能降低不到1分贝在300和400凯尔文之间.

结论:

  • 在碳化上对石墨烯电路的单体集成是可行的.
  • 展示的石墨烯射频混合器显示出高性能和热稳定性.
  • 这项工作推进了具有复杂功能的实际石墨烯技术的潜力.