Graded Bandgap Type-II Superlattice Photodiodes
Abstract
An infrared focal plane array (IRFPA) is a dense array of sensors and readout circuitry that creates the image in an infrared camera. are at the core of infrared detector systems for finding and tracking missiles in space, guiding missile seekers, seeing in the dark, mapping ocean temperatures, and defeating camouflage and decoys. For the past decade, continuous improvement of based on mercury cadmium telluride have dramatically enhanced performance and expanded capabilities in the mid-wave (3-5 micrometers) and long-wave (8-14 micrometers) infrared (MWIR and LWIR) bands. However, further improvements demanded by the next generation of detector systems are driving investigations of other material systems. A promising material system for the next generation of is the type-II superlattice (T2SL) lattice-matched to. Although the detector concept was proposed over 30 years ago, only in the last few years has this design begun to demonstrate its potential. researchers have been at the forefront, making key innovations including the W-structured T2SL (WSL), the graded bandgap T2SL photodiode, and most recently, shallow-etch mesa isolation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2008
- Accession Number
- ADA518003
Entities
People
- C. L. Canedy
- E. H. Aifer
- Eric M. Jackson
- I. Vurgaftman
- J. G. Tischler
- J. R. Meyer
- Jeffrey H. Warner
- Lloyd J. Whitman
- R. Stine
Organizations
- United States Naval Research Laboratory