Effects of size dispersion disorder on the charge transport in self-assembled 2-D Ag nanoparticle arrays

被引:120
作者
Beverly, KC
Sampaio, JF
Heath, JR
机构
[1] Calif NanoSyst Inst, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA
[3] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil
关键词
D O I
10.1021/jp012261g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Temperature-dependent DC transport measurements on self-assembled Ag nanoparticle monolayers have been obtained as a function of particle size distribution induced disorder. A transition temperature between the transport regimes of simple, activated transport to variable range hopping is observed to be in tune with increasing disorder of the monolayer. The overall transport behavior is described in terms of a mobility gap in the Anderson localized regime and an Efros-Shklovskii variable range hopping between localized states in the gap below some temperature characterized by the degree of disorder. From these results, we predict a true insulator-metal transition at narrow but still finite (<3%) size distributions.
引用
收藏
页码:2131 / 2135
页数:5
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