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    National Tsing Hua University Institutional Repository > 理學院 > 物理系 > 期刊論文 >  Interfacial polar bonding induced multifunctionality of nano silicon in mesoporous silica


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/82247


    Title: Interfacial polar bonding induced multifunctionality of nano silicon in mesoporous silica
    Authors: Jung Y. Huang;Jia M. Shieh;Hao C. Kuo;Ci-Ling. Pan
    教師: 潘犀靈
    Date: 2009
    Publisher: Wiley-VCH Verlag Berlin
    Relation: Adv. Functional Mat. Vol. 19, Issue 13, pp. 2089-2094, July 13, 2009
    Keywords: POROUS SILICON
    ELECTRONIC STATES
    GE NANOCRYSTALS
    THIN-FILMS
    FERROELECTRICITY
    POLARIZATION
    SURFACE
    BLUE
    Abstract: The optoelectronic response of a material governs its suitability for a wide range of applications, from photon detection to photovoltaic conversion. To conquer the material limitations and achieve improved optoelectronic responses, nanotechnology has been employed to arranges subunits with specific size-dependent quantum mechanical properties in a hierarchically organized structure. However, building a functional optoelectronic system from nano-objects remains a formidable challenge. In this paper, the fabrication of a new artificially engineered optoelectronic material by the preferential growth of silicon nanocrystals on the bottom of the pore-channels of mesoporous silica is reported. The nanocrystals form highly stable interface structures bonded on one side; these structure show strong electron-phonon coupling and a ferroelectric-like hysteretic switching property. A new class of multifunctional materials is realized by invoking a concept that employs semiconductor nanocrystals for optical sensing and utilizes interfacial polar layers to facilitate carrier transport and emulate ferroelectric-like switching.
    URI: http://www.wiley-vch.de/publish/en/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/82247
    Appears in Collections:[物理系] 期刊論文

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