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Quantum Confinement In Coated Nanoparticles

Author

Listed:
  • H.S. ZHOU

    (Department of Chemical Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan;
    Nanophotonics Laboratory, Frontier Research Program, RIKEN, Wako-shi, 351–01, Japan)

  • I. HONMA

    (Department of Chemical Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan)

  • K.H. KIM

    (Department of Chemical Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan)

  • H. KOMIYAMA

    (Department of Chemical Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan)

  • H. SASABE

    (Department of Chemical Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan;
    Nanophotonics Laboratory, Frontier Research Program, RIKEN, Wako-shi, 351–01, Japan)

  • J.W. HAUS

    (Department of Chemical Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan;
    Physics Department, Rensselaer Polytechnic Institute, Troy, NY 12180–3590, USA)

Abstract

We synthesizeCdS/PbS-coated nanoparticles and investigate the spectra of their optical absorption and photoluminescence (PL). The experimental results can be explained by the quantum-confinement model in coated semiconductor nanoparticles. We also prepare gold-coated nanoparticles with a nonmetallic coreAu2Sby a two-step colloidal method, and observe the extraordinary optical absorption spectra of the coated samples. The results are consistent with a theoretical approach that includes electromagnetic resonance effects and the quantum confinement of the carriers in the thin gold shell layer.

Suggested Citation

  • H.S. Zhou & I. Honma & K.H. Kim & H. Komiyama & H. Sasabe & J.W. Haus, 1996. "Quantum Confinement In Coated Nanoparticles," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 3(01), pages 133-136.
    • Handle: RePEc:wsi:srlxxx:v:03:y:1996:i:01:n:s0218625x96000279
    DOI: 10.1142/S0218625X96000279
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