The crossover between tunnel and hopping conductivity in granulated films of noble metalsстатья
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Дата последнего поиска статьи во внешних источниках: 17 января 2018 г.
Аннотация:The conductivity of thin films composed by clusters of gold and silver nanoparticles has been studies in a wide range of temperatures. The switch from a temperature independence to an exponential thermal dependence of the conductivity manifests the crossover between the tunnel and thermally activated hopping regimes of the electronic transport at the temperature of 60 degrees C. The characteristic thermal activation energy that governs hopping of electrons between nanoparticles is estimated as 1.3 eV. We have achieved a good control of the composition and thicknesses of nano-cluster films by use of the laser ablation method in colloidal solutions. (C) 2017 Elsevier Ltd. All rights reserved.