Eur. Phys. J. B 46, 497-500 (2005)
https://doi.org/10.1140/epjb/e2005-00279-y

Electrical properties of micrometric metallic dots obtained by porous polymeric membranes

¹ INFM - Coherentia and Università di Napoli Federico II, Dipartimento di Fisica, Napoli, 80125, Italy
² University of Ulm, Organic and Macromolecular Chemistry, OCIII, Materials &Catalysis ACII Germany, 89069, Germany
³ Physical Chemistry, Chemnitz University of Technology, Chemnitz, Germany

Corresponding author: ^a mbarra@na.infn.it

Received: 19 April 2005
Revised: 10 June 2005
Published online: 7 September 2005

Abstract

We report on the fabrication of micrometric regular metallic arrays obtained by using, as a template, a polymeric membrane with regular pores. The membranes were prepared by embedding hydrophobized silica colloids into a polymer layer and subsequently removing them. We have investigated the electronic transport properties of the metallic arrays as a function of the applied electric field and temperature. Simple current voltage (IV) characteristics present a strong switching behavior with I_ON/I_OFF ratios up to 10⁴. Different temperature dependences of the resistance in the different ranges of the applied electric field have been observed. Finally, the performances of a field effect device (FET), with the conducting channel and insulating layer consisting of a Gold dot array and a STO substrate, respectively, have been investigated. The channel resistivity has been modified at least of two orders of magnitude and a mobility of about 2 cm²/V*s has been extracted by the analysis of the FET transfer curve.