Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 16, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2800808
Keywords
-
Categories
Ask authors/readers for more resources
We presented an alternative design of type II superlattice photodiodes with the insertion of a mid-wavelength infrared M-structure AlSb/GaSb/InAs/GaSb/AlSb superlattice for the reduction of dark current. The M-structure superlattice has a larger carrier effective mass and a greater band discontinuity as compared to the standard type II superlattices at the valence band. It acts as an effective medium that weakens the diffusion and tunneling transport at the depletion region. As a result, a 10.5 mu m cutoff type II superlattice with 500 nm M-superlattice barrier exhibited a R(0)A of 200 Omega cm(2) at 77 K, approximately one order of magnitude higher than the design without the barrier. The quantum efficiency of such structures does not show dependence on either barrier thickness or applied bias. (C) 2007 American Institute of Physics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available