Biaxially Oriented CdSe Nanorod

Dag W. Breiby, Patrick T.K. Chin, Jens Wenzel Andreasen, Kim A. Grimsrud, Zhenyu Di, Rene A.J. Janssen

    Research output: Contribution to journalJournal article

    Abstract

    The shape, structure, and orientation of rubbing-aligned cadmium selenide (CdSe) nanorods on polymer coated glass substrates have been studied using transmission electron microscopy (TEM) and grazing incidence X-ray scattering combined with computer simulations. The nanorods are found to be of wurtzite structure and highly monodisperse, and have an essentially ellipsoidal shape with short axes of 8 nm and long axis of 22 nm. The nanorods exhibit preferred biaxial orientation with the hexagonal a−c-plane parallel to the sample surface and the c-axis oriented along the rubbing direction of the sample. Some tendency of smectic-A ordering is observed. A quantitative model incorporating atomic structure, rod shape, and preferred orientation was developed for numerically simulating the diffraction peak positions, widths, and intensities, giving good correlation with the experimental observations.
    Original languageEnglish
    JournalLangmuir
    Volume25
    Issue number18
    Pages (from-to)10970-10974
    ISSN0743-7463
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Polymer solar cells
    • Solar energy

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