JELE_V7_N3_RP1 Roberto Marani Anna Gina Perri Journal on Electronics Engineering 2249 – 0760 7 3 7 16 Molecular Electronics, Molecular Diode, Modelling, Digital Circuits Simulation, SPICE In this paper, the authors have illustrated a new kind of devices (molecular devices), able to work better at nanometer scale, with particular attention to molecular diodes. In particular, the I-V characteristics of a gated molecular diode were simulated, showing how an increase of the gate voltage involves an increase of the drain current. Then they proposed a simulation study which is obtained by SPICE simulator, in order to analyze and design some basic digital circuits (AND & OR) employing molecular diodes. In the light of obtained results, the molecular diodes are demonstrated as logic ports cannot be used because, although they follow input pulses, the logic levels in output and the noise margin obtained are not appropriate for electronic applications. March – May 2017 Copyright © 2017 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=13559