A double δ-doped In0.49Ga0.51P/In0.25Ga0.75As/GaAs high electron mobility transistor has been successfully fabricated by metalorganic chemical-vapor deposition. Improved electron mobility as high as 5410 (19 200) cm2/V s at 300 (77) K along with turn-on voltage as high as 2.3 V and reverse gate-to-drain voltage up to 75 V are achieved. These characteristics are attributed to the use of the δ-doped, undoped InGaP Schottky layer, and undoped GaAs setback layer. Moreover, the parasitic parallel conduction can be eliminated. The activation energy is also deduced. © 1999 American Institute of Physics.
Published in:
Applied Physics Letters
(Volume:75
,
Issue:
11
)
Date of Publication:
Sep 1999
- Page(s):
-
1616
-
1618
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.124772
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Sep 1999