Charge carrier transport in polyimide with Co nanoparticles formed by ion implantation
Artikel i vetenskaplig tidskrift, 2004

Temperature dependence of resistance is studied for polyimide (PI) samples implanted by Co+ ions with fluences of 2.5x1016-1.25x1017 cm-2 at ion current densities of 4, 8 and 12 uA.cm-2. It is found that electron transport in the implanted samples originates from radiation-induced changes of the PI and Co nanoparticle formation and it depends dramatically on the ion current density. A variable range hopping mechanism dominates for all fluences at a low ion current density of 4 uA.cm-2 while a transition to a semimetallic type of conductance is observed with an increase in ion current density due to agglomeration of the Co nanoparticles forming a percolation way for the charge carriers. It is shown that both quantum effects of weak localisation and electron-electron interaction give a significant contribution to the transport mechanism.

electrical transport

metal/polymer composite

Ion implantation

Författare

Vladimir Popok

Chalmers, Institutionen för experimentell fysik, Atomfysik

M.G. Lukashevich

Belarusian State University

S.M. Lukashevich

Belarusian State University

R.I. Khaibullin

Russian Academy of Sciences

Gebze Teknik Universitesi

V. Bazarov

Russian Academy of Sciences

Surface Science

0039-6028 (ISSN)

Vol. 566-568 1-3 PART 1 327-331

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1016/j.susc.2004.05.063

Mer information

Senast uppdaterat

2018-06-12