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亚微米栅长调制掺杂场效应管(MODFET)的制造
Fabrication of Submicron Gate Length Modulation Doped AlxGa1-xAs/GaAs Field Effect Transistors
【摘要】 本文简述了调制掺杂场效应管(MODFET)材料参数的设计原理,0.2μm栅长T型栅的制造工艺以及为了获得0.2μm栅长的器件所要求的电子束曝光的详细条件.虽然所用材料的缓冲层纯度不够高(~1×1015cm-3),但由于采用了T型结构,器件室温跨导值仍达到了200mS/mm,在77K为375mS/mm.
【Abstract】 This paper describes the design principle of modulation doped AlxGa1-x As/GaAs fieldeffect transistors (MODFET),processing steps of gate length as short as 0.2μm with T typegate and the conditions of the E-Beam lithography to obtain submicron gate length.Trans-conductances of the order of 200 mS/mm at room temperature and 375 mS/mm at 77K aremeasured.
【关键词】 调制掺杂;
二维电子气;
亚微米栅长;
场效应晶体管;
【Key words】 Modulation doped; Two-dimensional electron gas; Submicron gate length; Field effect transistors;
【Key words】 Modulation doped; Two-dimensional electron gas; Submicron gate length; Field effect transistors;
- 【文献出处】 半导体学报 ,Chinese Journal of Semiconductors , 编辑部邮箱 ,1989年03期
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