Abstract

The irradiation of a polycarbonate (PC) matrix with 28Siþ ions has been performed by selecting threedifferent energies: 0.5 MeV, 1.0 MeV and 2.0 MeV. The comparative study of the modifications induced inthe polymer as a function of the incident ion beam energy has been carried out in the range of fluencesbetween 5  1013 ions cm2 and 1  1015 ions cm2. The changes induced in the structure of the matrixtowards the production of conducting plastics for optoelectronics devices have been evaluated by Ramanand Photoluminescence spectroscopy. The carbonization process of the polymer generates a networkmade of sp2-bonded graphitic clusters embedded in a sp3-bonded matrix. The amount ofnanocrystalline-graphite with respect to amorphous-carbon increases as ion energy and fluence increase,in accordance with the increase of the sp2-order arrangement. With 0.5 MeV the modification process isat an initial stage so that the changes, in terms of structure and PL emission, are observed only for thehighest fluence, while for 1.0 MeV it has been achieved a higher density of small cluster with an orderand homogeneity even better than for 2.0 MeV. The irradiation process with a suitable set of experimentalparameters allows tuning the PC emission from ~510 nm (pristine matrix) up to ~550e600 nm.

Autore Pugliese

• Lomascolo Mauro

Tutti gli autori

• Resta V.; Quarta G.; Lomascolo M.; Maruccio L.; Calcagnile L.

Titolo volume/Rivista

Vacuum

Anno di pubblicazione

2015

ISSN

0042-207X

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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