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为何没有P型 GaN HEMT?
Release date:2023-04-13
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Category:Technical Article
Views:536次
硅有NMOS和PMOS两种器件:NMOS中,载流子为电子,PMOS载流子为空穴
然而目前还没有商业化的P型GaN HEMT
首先,镁离子掺杂很困难
其次,氮化镓中空穴的迁移率很低 (空穴:30 cm2/Vs vs. 电子:2000 cm2/Vs)
氮化镓IC通常使用互补的增强型(E-mode)和耗尽型(D-mode)或者干脆完全使用增强型来实现,因此氮化镓IC通常不太容易实现想要的功能
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