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Author: search.filters.author.Chang, W. H.Subject: search.filters.subject.fluctuations

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    Item type:Item,
    Interrelation of transport and optical properties in gold nanoclusters
    (2010-09-20)
    Shu, G. W.
    ;
    Chen, T. Y.
    ;
    Shen, J. L.
    ;
    Lin, C. A. J.
    ;
    Chang, W. H.
    Temperature dependence of the electrical conductivity and photoluminescence (PL) in Au nanoclusters (NCs) is investigated. The correlation of the conductivity and PL in Au NCs at different temperatures is evident: (i) for T < 50 K, both the conductivity and PL intensity decrease with temperature, which suggests thermal structural fluctuations; (ii) for 50 K < T < 90 K, conductivity and PL are explained by variable range hopping; (iii) for 90 K < T < 170 K, simple thermal activated hopping dominates in conductivity, with a rate-equation model proposed to analyze the carrier transfer in PL. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3491288]
  • Thumbnail Image
    Item type:Item,
    Interrelation of transport and optical properties in gold nanoclusters
    (2010-09-20)
    Shu, G. W.
    ;
    Chen, T. Y.
    ;
    Shen, J. L.
    ;
    Lin, C. A. J.
    ;
    Chang, W. H.
    Temperature dependence of the electrical conductivity and photoluminescence (PL) in Au nanoclusters (NCs) is investigated. The correlation of the conductivity and PL in Au NCs at different temperatures is evident: (i) for T < 50 K, both the conductivity and PL intensity decrease with temperature, which suggests thermal structural fluctuations; (ii) for 50 K < T < 90 K, conductivity and PL are explained by variable range hopping; (iii) for 90 K < T < 170 K, simple thermal activated hopping dominates in conductivity, with a rate-equation model proposed to analyze the carrier transfer in PL. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3491288]