Multilayer HfO2/TiO2 gate dielectric engineering of graphene field effect transistors

被引:10
|
作者
Deen, David A. [1 ]
Champlain, James G. [2 ]
Koester, Steven J. [1 ]
机构
[1] Univ Minnesota, Elect & Comp Engn Dept, Minneapolis, MN 55455 USA
[2] Naval Res Lab, Elect Sci & Technol Div, Washington, DC 20375 USA
关键词
20;
D O I
10.1063/1.4818754
中图分类号
O59 [应用物理学];
学科分类号
摘要
Graphene field effect transistors and capacitors that employ ultra-thin atomic layer deposited high-kappa TiO2 dielectrics are demonstrated. Of the three TiO2 gate insulation schemes employed, the sequentially deposited HfO2:TiO2 gate insulator stack enabled the reduction of equivalent oxide thickness while simultaneously providing an ultra-thin gate insulation layer that minimized gate leakage current. The multilayer gate insulation scheme demonstrates a means for advanced device scaling in graphene-based devices. (C) 2013 AIP Publishing LLC.
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页数:4
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