Silicon-Based Cooling Elements

David Leadley, Martin Prest, Jouni Ahopelto, Tom Brien, David Gunnarsson, Phil Mauskopf, Juha Muhonen, Maksym Myronov, Hung Nguyen, Evan Parker, Mika Prunnila, James Richardson-Bullock, Vishal Shah, Terry Whall, Qing-Tai Zhao

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


    This chapter presents an introduction to superconductor-semiconductor (S-Sm) tunnel junction coolers, before outlining some of the progresses made during the nanofunction program on electron cooling from 300 mK in silicon-based junctions. PtSi is an interesting material to consider as a Schottky barrier to Si because of its role as a contact material in the semiconductor industry. The chapter investigates carrier-phonon coupling in unstrained silicon, with both n- and p-type dopants, and the effect of increasing the strain in silicon grown on a Si1-xGex virtual substrate with the Ge fraction x of 20% and 30%. The reduction in e-ph coupling shows promise for dramatic improvements in performance of bolometric detectors for a variety of electromagnetic radiation sensing applications using silicon based cold electron bolometers.
    Original languageEnglish
    Title of host publicationBeyond CMOS Nanodevices 1
    EditorsFrancis Balestra
    ISBN (Electronic)978-1-118-98477-2
    ISBN (Print)978-1-84821-654-9
    Publication statusPublished - 2014
    MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material


    • carrier-phonon coupling
    • silicon cold electron bolometer
    • silicon-based Schottky barrier junctions
    • superconductor-semiconductor (S-Sm) cooler
    • unstrained silicon


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