| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1690607 | Vacuum | 2012 | 5 Pages |
The samples of polycarbonate were implanted to 100 keV Ar+ ions at fluences ranging from 1 × 1015 to 2 × 1016 ions/cm2. The effect of ion implantation on DC conductivity and optical behaviour of this polymer has been investigated. The observed changes have been correlated with the induced structural changes in the implanted layer using Raman spectroscopy. The increase in electrical conductivity, decrease in UV–visible transmission and red shifting of the optical absorption edge may be due to the formation of a three dimensional carbonaceous structure having conjugated double bonds in the near surface layer of polycarbonate as a result of ion implantation. The shift in the conduction mechanism in the implanted layer from ohmic towards SCLC has been observed as a function of implantation dose. The novelty of the present study is to investigate the implantation induced electrical conduction mechanism in the implanted polycarbonate and to comprehend it with induced optical behaviour for its utilization as optically active material with conductive surface in various opto-electronic devices.
► Polycarbonate samples were implanted to 100 keV Ar+ ions up to fluence 2 × 1016 cm−2. ► A three dimensional highly cross-linked dehydrogenated carbon structure on PC surface was formed. ► σDC of the 2 × 1016 ions/cm2 implanted layer was found 108 times the pristine sample. ► Decrease in UV–VIS transmittance and red shifting of absorption edge was observed. ► Optical energy gap was reduced from 3.05 eV (virgin) to 2.99 eV (2 × 1016 cm−2).
