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RF-MBE生长的AlGaN/GaN高电子迁移率晶体管特性(英文)
Characteristics of AlGaN/GaN HEMTs Grown by Plasma-Assisted Molecular Beam Epitaxy
【摘要】 用射频分子束外延技术研制出了室温迁移率为 10 35 cm2 /(V· s) ,二维电子气浓度为 1.0× 10 1 3cm- 2 ,77K迁移率为 2 6 5 3cm2 /(V· s) ,二维电子气浓度为 9.6× 10 1 2 cm- 2 的 Al Ga N/Ga N高电子迁移率晶体管材料 .用此材料研制的器件 (栅长为 1μm,栅宽为 80μm,源 -漏间距为 4μm )的室温非本征跨导为 186 m S/m m,最大漏极饱和电流密度为 92 5 m A/m m,特征频率为 18.8GHz.
【Abstract】 AlGaN/GaN high electron mobility transistor (HEMT) materials are grown by RF plasma-assisted molecular beam epitaxy (RF-MBE) and HEMT devices are fabricated and characterized.The HEMT materials have a mobility of 1035cm2/(V·s) at sheet electron concentration of 1.0×10 13cm -2at room temperature.For the devices fabricated using the materials,a maximum saturation drain-current density of 925mA/mm and a peak extrinsic transconductance of 186mS/mm are obtained on devices with gate length and width of 1μm and 80μm respectively.The f t,unit-current-gain frequency of the devices,is about 18.8GHz.
- 【文献出处】 半导体学报 ,Chinese Journal of Semiconductors , 编辑部邮箱 ,2004年02期
- 【分类号】TN32
- 【被引频次】2
- 【下载频次】131