Real-time viewing of dynamic processes on CdTe surfaces at elevated temperature

David Smith, R. Vogl, Ping Lu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Online video recording with a high-resolution electron microscope has been used to study real-time atomic events occurring at cadmium telluride surfaces over a range of temperatures from 27°C to 500°C. Using the profile imaging mode of observation, different types of surface activity have been documented on (001), (111) and (110) surfaces. For example, the (001) surfaces displayed reversible phase transformations between 2×1 and 3×1 reconstruction at a transition temperature of about 200°C. The (111) surfaces exhibited sublimation by a ledge mechanism that depended upon the terminating surface: layer-by-layer removal invariably occurred for (110) surface terminations whereas bilayer removal was usually seen for terminations by (100) surfaces. Finally, the (110) surface rearranged by a hopping mechanism, but no substantial loss of material was observed.

    Original languageEnglish (US)
    Title of host publicationMaterials Research Society Symposium Proceedings
    PublisherPubl by Materials Research Society
    Pages133-138
    Number of pages6
    ISBN (Print)1558991905
    StatePublished - Jan 1 1993
    EventSymposium on Atomic-scale Imaging of Surfaces and Interfaces -
    Duration: Nov 30 1992Dec 2 1992

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume295
    ISSN (Print)0272-9172

    Other

    OtherSymposium on Atomic-scale Imaging of Surfaces and Interfaces
    Period11/30/9212/2/92

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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