Synthesis of Cu-In-S fluorescent nanocrystals

Kosuke Watanabe, Masato Uehara, Hiroyuki Nakamura, Hideaki Maeda

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    CuInS2 (CIS) fluorescent nanocrystals (NCs) were obtained by heating an organic metal complex. The photoluminescence (PL) originated from the donor-acceptor, and the quantum yield (QY) was achieved at 6%. Furthermore, we doped some metal ions (Zn2+, Cd2+ or Ag+) by the post heat-treatment in the organic coordinating solvent in order to tune the band gap of NCs. By this post treatment, the alteration of NCs structure was suggested, such as changing into an alloying and composite structure. In Zn-doping, the PL wavelength was widely tuned from 535 to 650 nm by alloying between CIS and ZnS. Moreover, PL intensity was increased with these structure alterations. In particular, the materials doped with Zn or Cd achieved respective QY of 25% and 40%.

    Original languageEnglish
    Title of host publicationQuantum-Dot and Nanoparticle Bioconjugates-Tools for Sensing and Biomedical Imaging
    Pages14-19
    Number of pages6
    Publication statusPublished - 2008
    Event2007 MRS Fall Meeting - Boston, MA, United States
    Duration: Nov 26 2007Nov 30 2007

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume1064
    ISSN (Print)0272-9172

    Other

    Other2007 MRS Fall Meeting
    CountryUnited States
    CityBoston, MA
    Period11/26/0711/30/07

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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