Nanoscience and Nanotechnology at McMaster University - Arizona ...
Nanoscience and Nanotechnology at McMaster University - Arizona ...
Nanoscience and Nanotechnology at McMaster University - Arizona ...
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• Antimonide m<strong>at</strong>erials<br />
• Mid Infrared lasers/detectors for<br />
Biomedical applic<strong>at</strong>ions<br />
Defense <strong>and</strong> security applic<strong>at</strong>ions<br />
Next gener<strong>at</strong>ion non-silica fibers<br />
Superl<strong>at</strong>tice Photodetectors<br />
TEM images<br />
GaSb cap<br />
Top InGaSb<br />
metamorphic layer<br />
n<br />
Top layer n+ In 0.1<br />
Ga 0.9<br />
Sb<br />
n<br />
InGaSb layers<br />
Undoped absorption layer<br />
InAs 0.816 Sb 0.184<br />
GaSb buffer<br />
GaSb substr<strong>at</strong>e<br />
Superl<strong>at</strong>tice Multiplic<strong>at</strong>ion layer<br />
In 0.1 Ga 0.9 Sb /AlInGaSb<br />
p<br />
p<br />
+ Bottom contact p+ In0.1 Ga 0.9 Sb ~ 0.5μm<br />
AFM image<br />
Metamorphically Graded Buffer<br />
from GaSb to In 0.15 Ga 0.85 Sb ~ 1.5μm<br />
p GaSb Substr<strong>at</strong>e<br />
Surface roughness: 0.175nm; Disloc<strong>at</strong>ion density: ~3x10 8 cm -2
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