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Direct determination of Shockley-Read-Hall trap density in InSb/InAlSb detectors

  • Graeme John Nott
  • , P. C. Findlay
  • , John Graham Crowder
  • , Carl R Pidgeon
  • , C. T. Elliott
  • , T Ashley
  • , A D Johnson
  • , J-P R Wells
  • , I V Bradley
  • , B. N. Murdin
  • , A M White

Research output: Contribution to journalArticlepeer-review

Abstract

Accurate determination of trap density in the active region of mid-infrared narrow-bandgap detectors is crucial in the development towards background-limited performance at higher operating temperatures. We have used both optical and electrical measurements to determine the trap density in InSb/InAlSb nonequilibrium detector structures. Both of these techniques result in very good agreement with trap densities of 5×1014 cm-3.

Original languageEnglish
Pages (from-to)L731-L734
Number of pages4
JournalJournal of Physics: Condensed Matter
Volume12
Issue number50
DOIs
Publication statusPublished - 18 Dec 2000

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