Abstract
Al0.3Ga0.7As/ln0.15Ga0.85As doped-channel structures were grown by molecular beam epitaxy on 3″ GaAs substrates. The uniformities of electrical and optical properties across a 3″ wafer were evaluated. A maximum 10% variation of sheet charge density and Hall mobility was achieved for this doped-channel structure. A1 μm long gate field-effect transistor (FET) built on this layer demonstrated a peak transconductance of 350 mS/mm with a current density of 470 mA/mm. Compared to the high electron mobility transistors, this doped-channel FET provides a higher current density and higher breakdown voltage, which is very suitable for high-power microwave device applications.
| Original language | English |
|---|---|
| Pages (from-to) | 675-679 |
| Number of pages | 5 |
| Journal | Journal of Electronic Materials |
| Volume | 23 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1994 |
Keywords
- AlGaAs/InGaAs
- heterostructure field-effect transistor
- molecular beam epitaxy
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