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

13 Citations (Scopus)


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
Issue number50
Publication statusPublished - 18 Dec 2000


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