Smooth surface roughness of silanized CdSe(ZnS) quantum dots

    Authors

    J. M. Xu; C. S. Wang; J. H. Wang; Q. Huo; N. F. Crawford; E. A. Veliz;R. M. Leblanc

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    J. Colloid Interface Sci.

    Keywords

    Quantum dots; Langmuir monolayer; Langmuir-Blodgett films; Sol-gel; process; AIR-WATER-INTERFACE; NANOCRYSTALLITES; LANGMUIR; Chemistry, Physical

    Abstract

    The interparticle distance of CdSe(ZnS) quantum dots was accurately controlled by polymerization at the air-water interface which provided an increased homogeneity of the Langmuir-Blodgett film leading to a surface smoothness comparable to mica. The choice of a silane derivative is based on the fact that silicon is semiconductor, and the compound CdSe being the core of the quantum dot is also semiconductor. The combination of the two semiconductors could bring some unusual conduction properties as a polymeric silanized network. But first, it is most important to characterize the smoothness of the surface, which might be correlated to the formation of "trap" states, i.e. the photo-excited electron can fall, or the photo-excited hole can "float". One will focus our research strategy, as a pilot study, to characterize the surface of the new polymeric material. (C) 2012 Elsevier Inc. All rights reserved.

    Journal Title

    Journal of Colloid and Interface Science

    Volume

    393

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    21

    Last Page

    28

    WOS Identifier

    WOS:000314666300002

    ISSN

    0021-9797

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