Effect of molecular orientation on electrical bistability of organic molecules in a monolayer

Dey, Sukumar ; Pal, Amlan J. (2012) Effect of molecular orientation on electrical bistability of organic molecules in a monolayer Organic Electronics, 13 (9). pp. 1499-1505. ISSN 1566-1199

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.orgel.2012.04.021

Abstract

We study the effect of molecular orientation on electrical bistability of an organic molecule in a monolayer. The planer nickel phthalocyanine molecules could be oriented parallel or perpendicular to the electrode substrate in a monolayer. In this work, we report that On/Off ratio and hence the electrical bistability, transport gap, and density of states of the molecules depend on the orientation of the molecules. The transport gap of the molecules decreases upon conductance-switching. This leads to a decrease in barrier heights with electrodes and hence higher tunneling current for the high-conducting state. Multilevel conductance has been demonstrated in the monolayer of the molecules.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Electrical Bistability of Organic Molecules; Orientation of Molecules in a Monolayer; Transport Gap; Multilevel Conductance; Density of States
ID Code:98363
Deposited On:05 Jun 2014 05:16
Last Modified:05 Jun 2014 05:16

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