Structure and Optical Property of Polymer-Derived Amorphous Silicon Oxycarbides Obtained at Different Temperatures

    Authors

    Y. G. Wang; K. W. Wang; L. G. Zhang;L. N. An

    Comments

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    Abbreviated Journal Title

    J. Am. Ceram. Soc.

    Keywords

    ALPHA-SI-H; CARBONITRIDE CERAMICS; ABSORPTION; FILMS; SEMICONDUCTORS; SPECTRA; PIEZORESISTIVITY; CONDUCTIVITY; VAPOR; Materials Science, Ceramics

    Abstract

    Amorphous silicon carbides are prepared by pyrolysis of a polycarbosilane precursor at different temperatures between 1000 degrees and 1400 degrees C. The structures of the resultant materials are analyzed using X-ray diffraction, electron paramagnetic resonance, and Raman spectroscopy. The optical properties of the SiC ceramics are investigated by measuring their absorption spectra. It is found that there is a critical temperature range, at which the structural and optical behavior varied in different ways as a function of pyrolysis temperature. The evolution in structures is discussed and the optical behavior is explained in terms of the structural evolution during pyrolysis at different temperatures.

    Journal Title

    Journal of the American Ceramic Society

    Volume

    94

    Issue/Number

    10

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    3359

    Last Page

    3363

    WOS Identifier

    WOS:000295524300040

    ISSN

    0002-7820

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