A new Al-free HFET structure: The pseudomorphic p-InP/n-InP/In/sub 0.75/GaAs double heterostructure /spl delta/-doped HEMT

A new Al-free HFET structure: The pseudomorphic p-InP/n-InP/In/sub 0.75/GaAs double heterostructure /spl delta/-doped HEMT

A new type of low pressure metal organic vapor epitaxial grown high electron mobility transistor (HEMT) device is reported. By using only a strained In/sub 0.75/Ga/sub 0.25/As quantum well (QW)-channel and InP as a carrier supplying n-type, /spl delta/-doped and barrier-enhancement p-type layers, a...

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Hauptverfasser: Kusters, A.M., Kohl, A., Brittner, S., Funke, T., Sommer, V., Heime, K.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
DH-HEMTs
Doping
Fabrication
Gallium arsenide
HEMTs
Indium phosphide
MODFETs
Optical buffering
Schottky barriers
Schottky diodes
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creator Kusters, A.M.
Kohl, A.
Brittner, S.
Funke, T.
Sommer, V.
Heime, K.
description A new type of low pressure metal organic vapor epitaxial grown high electron mobility transistor (HEMT) device is reported. By using only a strained In/sub 0.75/Ga/sub 0.25/As quantum well (QW)-channel and InP as a carrier supplying n-type, /spl delta/-doped and barrier-enhancement p-type layers, a high performance pseudomorphic double heterostructure (DH)-HEMT has been created. The authors present the growth, device fabrication, material quality, and the DC- and RF-performance of 0.8 /spl mu/m-devices, which show extremely good characteristics. The approach described here may serve as an useful alternative to InAlAs containing structures because it eliminates many troublesome effects such as kinks, deep levels, interface states, high output conductances and gate leakages, which are attributed to a large extent to impurity-Al interactions.< >
doi_str_mv 10.1109/ICIPRM.1993.380581
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ispartof 1993 (5th) International Conference on Indium Phosphide and Related Materials, 1993, p.473-476
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subjects DH-HEMTs
Doping
Fabrication
Gallium arsenide
HEMTs
Indium phosphide
MODFETs
Optical buffering
Schottky barriers
Schottky diodes
title A new Al-free HFET structure: The pseudomorphic p-InP/n-InP/In/sub 0.75/GaAs double heterostructure /spl delta/-doped HEMT
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