InAs/GaSb type-II strained-layer superlattice (T2SLS) materials are being considered for space-based infrared detector applications. However, an inadequate understanding of the role of carrier transport, specifically the vertical mobility, in the radiation tolerance of T2SLS detectors remains. Here, progress towards a vertical transport study of proton-irradiated, p-type InAs/GaSb T2SLS materials using magnetoresistance measurements is reported. Measurements in the growth direction of square mesas formed from InAs/GaSb superlattice material were performed using two distinct contact geometries in a Kelvin mode setup at variable magnetic fields, ranging from -9 T to 9 T, and temperatures, ranging from 5 K and 300 K. The results here suggested multi-carrier conduction and a field-dependent series resistance from the contact layer were present. The implications of these results and the plans for future magnetoresistance measurements on proton-irradiated T2SLS materials are discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Progress towards vertical transport study of proton-irradiated InAs/GaSb type-II strained-layer superlattice materials for space-based infrared detectors using magnetoresistance measurements



    Conference:

    Nanophotonics and Macrophotonics for Space Environments IX ; 2015 ; San Diego,California,United States


    Published in:

    Publication date :

    2015-09-01





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Performance of long-wave infrared InAs/GaSb strained layer superlattice detectors for the space applications (Invited Paper) [8164-28]

    Plis, E.A. / Gautam, N. / Kutty, M.N. et al. | British Library Conference Proceedings | 2011



    A highly strained InAs/GaSb type II superlattice for LWIR detection

    Chen, Yiqiao / Moy, Aaron / Mi, Kan et al. | SPIE | 2013


    Two-Mode InGaSb/GaSb Strained-Layer Superlattice, Infrared Photodetectors

    Chen, S. M. / Su, Y. K. / Yu, C. F. et al. | British Library Conference Proceedings | 1995