MBE grown type-II superlattice photodiodes for MWIR and LWIR imaging applications

Cory J. Hill, Jian V. Li, Jason M. Mumolo, Sarath D. Gunapala, David R. Rhiger, Robert E. Kvaas, Sean F. Harris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

We report on the status of GaSb/InAs type-II superlattice diodes grown by molecular beam epitaxy (MBE) and designed for infrared absorption in the 2-5 μn and 8-12 μn bands. Recent LWIR devices have produced detectivities as high as 8×10 10 Jones with a differential resistance-area product greater than 6 Ohmcm 2 at 80K with a long wavelength cutoff of approximately 12 μn. The measured quantum efficiency of these front-side illuminated devices is close to 30% in the 10-11 μn range. MWIR devices have produced detectivities as high as 8×10 13 Jones with a differential resistance-area product greater than 3×10 7 Ohmcm 2 at 80K with a long wavelength cutoff of approximately 3.7μm. The measured quantum efficiency of these front-side illuminated MWIR devices is close to 40% in the 2-3 μn range at low temperature and increases to over 60% near room temperature. Initial results on SiO 2 and epitaxial-regrowth based passivation techniques are also presented.

Original languageEnglish
Title of host publicationInfrared Technology and Applications XXXIII
EditionI
DOIs
Publication statusPublished - 2007 Nov 5
EventInfrared Technology and Applications XXXIII - Orlando, FL, United States
Duration: 2007 Apr 92007 Apr 13

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
NumberI
Volume6542
ISSN (Print)0277-786X

Other

OtherInfrared Technology and Applications XXXIII
CountryUnited States
CityOrlando, FL
Period07-04-0907-04-13

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'MBE grown type-II superlattice photodiodes for MWIR and LWIR imaging applications'. Together they form a unique fingerprint.

Cite this