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Advanced Materials

Electrodeposited quantum dots: Coherent nanocrystalline cdse on oriented polycrystalline au films

Authors

  • Dr. Yuva Golan,

    1. Department of Materials and Interfaces The Weizmatin Institute of Science Rehovot 76100 (Israel)
    Current affiliation:
    1. Department of Chemical Engineering, and Materials Department, University of California, Santa Barbara, CA 93106, USA
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  • Boaz Alperson,

    1. Department of Materials and Interfaces The Weizmatin Institute of Science Rehovot 76100 (Israel)
    Current affiliation:
    1. Department of Chemical Engineering, and Materials Department, University of California, Santa Barbara, CA 93106, USA
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  • Dr. John L. Hutchison,

    1. Department of Materials, University of Oxford Parks Road, Oxford OX1 3PH (UK)
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  • Dr. Gary Hodes,

    1. Department of Materials and Interfaces The Weizmatin Institute of Science Rehovot 76100 (Israel)
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  • Dr. Israel Rubinstein

    1. Department of Materials and Interfaces The Weizmatin Institute of Science Rehovot 76100 (Israel)
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  • G. Hodes and I. Rubinstein acknowledge support of this work by the US Office of Naval Research, grant no. N00014-93-1-1151.

Abstract

The formation of highly coherent nanocrystalline semiconductor films on polycrystalline metal substrates has important practical and theoretical implications. Electron diffraction patterns reveal that quantum dots (QDs) of CdSe grown on a gold film on a mica substrate are coherent over several micrometers in the lateral directions (see Figure), while in the case of a glass substrate there is a complete loss of epitaxy for QD layers not in direct contact with the gold. Fig.

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