Semiconductor device

Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Field effect transistor

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257655, H01L 310328

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active

060575662

ABSTRACT:
A semiconductor device includes a buffer layer (23) having a doped region (24), a barrier layer (26) over the buffer layer (23) and having a doped region (27), and a channel layer (25) located between the buffer layer (23) and the barrier layer (26) where the doping density of the doped region (27) in the barrier layer (26) is higher than the doping densities of the channel layer (25) and the doped region (24) in the first buffer layer (23).

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