Computer Science – Performance
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5564...34d&link_type=abstract
Infrared Systems and Photoelectronic Technology. Edited by Dereniak, Eustace L.; Sampson, Robert E.; Johnson, C. Bruce. Proceed
Computer Science
Performance
5
Scientific paper
High performance large-format Infrared Focal Plane Arrays are required for Third Generation Infrared Imaging technology. HgCdTe IRFPAs exhibit performances to meet this goal. Si-based composite substrates have proven to be the substrate of choice to realize high-resolution HgCdTe arrays. Composite substrate technology offers scalability, and wafer sizes as large as six-inches have been used with excellent compositional uniformity. Current state-of-the-art composite substrates exhibits dislocation density in low to mid 105 cm-2 range. The HgCdTe epitaxial layers on composite substrates, however, show a defect density in the low to mid 106 cm-2. Recent developments in CdSeTe/Si composite wafers show great promise for a better lattice matching to HgCdTe alloy, and it is envisioned that with further improvements in both, materials quality and device architecture, a HgCdTe based scalable technology is within our grasp.
Dhar Nibir K.
Tidrow Meimei Z.
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