Half-wave organic-rectifiers with donor/acceptor assemblies in the molecular scale

Mohanta, Kallol ; Pal, Amlan J. (2009) Half-wave organic-rectifiers with donor/acceptor assemblies in the molecular scale Organic Electronics, 10 (5). pp. 960-964. 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.2009.05.002

Abstract

We fabricate molecular rectifiers based on a monolayer of a donor molecule and a monolayer of an acceptor molecule in sequence. We characterize the donor/acceptor assemblies under ac voltage. We show that high-frequency half-wave rectifiers can be fabricated and characterized from the molecular assembly. From the frequency-response of the half-wave rectifiers, we study time responses of the processes that are responsible for the observed molecular rectification. We comment on the three steps of a molecular rectifier - the steps being electron-transfer to the acceptor moiety, electron-withdrawal from the donor moiety, and charge-transfer between an anionic-acceptor and a cationic-donor. The results show that the latter process is a slow one that may be due to conformational-change of the anionic-acceptors upon oxidation.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Molecular Rectifier; D-σ-A; Half-wave Organic Rectifier
ID Code:65778
Deposited On:18 Oct 2011 09:10
Last Modified:18 Oct 2011 09:10

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