The establishment of an electrical contact to amorphous silicon nanoparticles was studied. The temperature-dependent I-V behavior of different electrode pair MSM devices were studied, to investigate the transport mechanism of the silicon particles. It was shown that the space charge limited current (SCLC) model fits the medium voltage range (2-6 V), while space charged limited current with Frenkel-Poole effect fits the ralatively high voltage range (5-8 V). Based on SCLC enhanced with Frenkel-Poole effect, the activation energy measured at high voltage was determined to 0.44 eV.
Bibliographical noteFunding Information:
The authors wish to acknowledge Professor Peter McMurry for very helpful discussion and the National Science Foundation for financial support of this work (Contract No. 9909563). Additional support was provided by the MRSEC Program of the National Science Foundation under Award No. DMR-0212302.
Copyright 2012 Elsevier B.V., All rights reserved.