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The Complexity Of The Growth And Optical Properties Of Germanium Nanoclusters

Author

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  • MIN HAN

    (Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
    Center of Advanced Studies in Science and Technology of Microstructures, Nanjing 210093, China)

  • YANCHUN GONG

    (Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
    Center of Advanced Studies in Science and Technology of Microstructures, Nanjing 210093, China)

  • JIANXIN MA

    (Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
    Center of Advanced Studies in Science and Technology of Microstructures, Nanjing 210093, China)

  • FENGQI LIU

    (Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
    Center of Advanced Studies in Science and Technology of Microstructures, Nanjing 210093, China)

  • GUANGHOU WANG

    (Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
    Center of Advanced Studies in Science and Technology of Microstructures, Nanjing 210093, China)

Abstract

Germanium nanoclusters are prepared by means of the inert-gas condensation method. The growth, coalescence, and aggregation processes are investigated by means of TEM. It is found that the clusters can be either nanocrystals or amorphous-like. Furthermore, during the deposition, they can either randomly land on surface, keep isolated and finally form a cluster-assembled uniform film or aggregate with fractal structures and then form porous film, depending on their preparation condition. Spectropho-tometric measurements are recorded for these samples at room temperature in the ultraviolet, visible, and near-IR region, and show obvious blueshift of the band gap as large as 1.0–2.0 eV in comparison with those for the bulk specimens, which may be related to the quantum-confinement effect.

Suggested Citation

  • Min Han & Yanchun Gong & Jianxin Ma & Fengqi Liu & Guanghou Wang, 1996. "The Complexity Of The Growth And Optical Properties Of Germanium Nanoclusters," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 3(01), pages 91-95.
    • Handle: RePEc:wsi:srlxxx:v:03:y:1996:i:01:n:s0218625x96000206
    DOI: 10.1142/S0218625X96000206
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