TITLE

High quality In0.53Ga0.47As Schottky diode formed by graded superlattice of In0.53Ga0.47As/In0.52Al0.48As

AUTHOR(S)
Lee, D. H.; Li, Sheng S.; Sauer, N. J.; Chang, T. Y.
PUB. DATE
May 1989
SOURCE
Applied Physics Letters;5/8/1989, Vol. 54 Issue 19, p1863
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A high quality In0.53Ga0.47As Schottky barrier diode fabricated by using a thin graded superlattice (SL) of In0.53Ga0.47As/In0.52Al0.48As grown by molecular beam epitaxy is reported for the first time in this letter. The effective Schottky barrier heights of ∼0.71 and ∼0.60 eV were obtained for the Au- and Cr-Schottky contacts, respectively. Excellent current-voltage and capacitance-voltage characteristics were obtained for these diodes. The graded InGaAs/InAlAs SL structure allows one to circumvent the problem of carrier pileup associated with abrupt heterostructures, and hence is advantageous for forming Schottky contacts on InGaAs for high-speed optoelectronic device applications.
ACCESSION #
9831116

 

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