Hysteresis-type current-voltage characteristics in Au/eumelanin/ITO/glass structure: towards melanin based memory devices

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Abstract

Hysteresis behaviour of the current–voltage characteristics collected on spin coated synthetic eumelanin layer embedded in the Au/eumelanin/ITO/glass structure is shown. The effect has been observed under dark both in air and vacuum environment and its magnitude has been found related to the eumelanin hydration state. Moreover, in vacuum and under white light illumination, enhancement of the hysteresis loop area respect to those collected under dark has been observed. Space charge storage and charge trapping/detrapping as possible mechanisms responsible of the observed current–voltage behaviour are discussed. Preliminary experimental results have evidenced the possible integration of eumelanin layers in electro-optical charge storage based memory devices.

Autore Pugliese

Tutti gli autori

  • FARINOLA G.M. ;LIGONZO T.

Titolo volume/Rivista

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Anno di pubblicazione

2010

ISSN

1566-1199

ISBN

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Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

34

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Settori ERC

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Codici ASJC

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