To induce negative differential resistance in organic devices through a ferroelectric polymer

Rath, Arup K. ; Pal, Amlan J. (2009) To induce negative differential resistance in organic devices through a ferroelectric polymer Organic Electronics, 10 (6). pp. 1116-1119. 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.2009.05.027

Abstract

We report how ferroelectric materials induce negative differential resistance (NDR) in organic devices. Fluorescein, which exhibits semiconducting current-voltage characteristics, shows NDR effect in a ferroelectric matrix. Here, we vary the concentration of fluorescein in the ferroelectric matrix to study its effect on NDR. We also show how the degree of polarization controls NDR. We infer that under a suitable bias, the ferroelectric polymer becomes polarized to facilitate electron-injection in the device followed by a double-reduction of fluorescein molecules. From the capacitance-voltage measurements, we substantiate the role of polarization in inducing NDR effect in organic molecules.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Negative Differential Resistance; Ferroelectric Polymer; Organic Molecules; Polarization
ID Code:65798
Deposited On:19 Oct 2011 07:24
Last Modified:19 Oct 2011 07:24

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