Abstract

1 MeV copper ions were implanted in polycarbonate (PC) matrices with fluences ranging from 5 × 1013 ions cm-2 to 1 × 1017 ions cm-2 in order to modify the optical and electrical properties of the polymer host. Increasing the ion fluence, an increase of the overall absorption and a redshift of the optical band gap were observed, from the initial value of 3.40 eV for the pristine PC to 0.80 eV measured for 1 × 1017 ions cm-2. For fluences above 5 × 1014 ions cm-2 a broad optical absorption bands at 450-475 nm and 520 nm were observed and, from 1 × 1016 ions cm-2, an additional band appeared at 570 nm. Both bands redshift when the fluence is increased. On the contrary, the optical response of the highest fluence sample is characterized by an overall band at 580 nm. The chemical modifications observed in the polymer ranges from induced -OH stretching, CO and -CC- double bonds and -CC and CH triple bonds formation, as the ion fluence increases. The implantation process affects the electrical properties of the polymer inducing a strong reduction in sheet resistance when ion fluence exceeds 5 × 1016 ions cm-2. A value of ∼7.1 × 107 Ω/sq has been obtained for the highest fluence, i.e. about 10 order of magnitude lower than the pristine PC.

Autore Pugliese

• Quarta Gianluca , Giancane Gabriele , Calcagnile Lucio , Valli Ludovico

Tutti gli autori

• V. Resta , L. Calcagnile , G. Quarta , L. Maruccio , A. Cola , I. Farella , G. Giancane , L. Valli

Titolo volume/Rivista

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS

Anno di pubblicazione

2013

ISSN

0168-583X

ISBN

Non Disponibile

Numero di citazioni Wos

21

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

22

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile