High Performance (Hg,Cd)Te Heterostructure Photodiode Arrays With Improved Radiation Hardening

H. R. Vydyanath; P. B. Ward; S. R. Hampton; L. Fishman; J. Slawinski; J. Ellsworth; J. B. Parkinson

doi:10.1117/12.960380

13 September 1989 High Performance (Hg,Cd)Te Heterostructure Photodiode Arrays With Improved Radiation Hardening

H. R. Vydyanath, P. B. Ward, S. R. Hampton, L. Fishman, J. Slawinski, J. Ellsworth, J. B. Parkinson

Proceedings Volume 1097, Materials, Devices, Techniques, and Applications for Z-Plane Focal Plane Array; (1989) https://doi.org/10.1117/12.960380
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

LWIR photodiodes have been fabricated in (Hg,Cd)Te heterostructures grown liquid phase epitaxially from tellurium rich solutions. R°A values of up to 10 8 ohm-cm2 and quantum efficiencies in excess of 50 percent have been demonstrated at 40K for a cutoff wavelength of λco ≈ 10.0 μm. These diodes have also been found to be extremely hard to nuclear radiation with no perceivable deterioration in the device performance even upon irradiation of up to 0.85 Megarads. We believe that these R°A performance and the levels of tolerance to radiation are the highest anyone has reported in literature to date.

Citation Download Citation

H. R. Vydyanath, P. B. Ward, S. R. Hampton, L. Fishman, J. Slawinski, J. Ellsworth, and J. B. Parkinson "High Performance (Hg,Cd)Te Heterostructure Photodiode Arrays With Improved Radiation Hardening", Proc. SPIE 1097, Materials, Devices, Techniques, and Applications for Z-Plane Focal Plane Array, (13 September 1989); https://doi.org/10.1117/12.960380

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