Lee, W. J. Kim, Yoon B. 2024-01-20T22:05:13Z 2024-01-20T22:05:13Z 2021-08-31 2008-12-01 0040-6090 https://pubs.kist.re.kr/handle/201004/132893 In this study, the adhesion and interface characteristics of NiCr/Cu metal film oil PI film modified by O-2 ion beam were investigated. The surface modification of PI film by O-2 ion beam enabled a significant decrease of contact angles of water from 68 degrees to 4.4 degrees at an ion dose of 1 x 10(18) ions/cm(2), which resulted in an increase of surface energy by a factor of two, The XPS (X-ray Photoelectron Spectroscopy) spectrum showed that the functional groups of C-O and C=O bonding oil PI surface were increased by the interaction between scissored unstable chains and reactive ions. The peel strength between PI and NiCr/Cu metal film increased with all increase of ion dose and the highest peel strength of 0.70 N/mm was obtained at an ion dose of 1 x 10(18) ions/cm(2). According to the XPS depth profile from NiCr metal layer into modified PI film, the O1s peak was broadened at near-interface region with an increase of depth from NiCr layer, which indicates that the new chemical bonding state was formed. In addition to C-O and C=O bonding, the newly formed chemical bonding at the interface between NiCr metal film and PI film was identified as metal-oxide compounds such as NiO, Cr2O3, and Cr-O by XPS curve fitting. Consequently, the improvement of adhesion is primarily attributed to the strong chemical bonding caused by the chemical interaction between NiCr and newly formed functional group by O-2 ion beam. (C) 2008 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA SURFACE MODIFICATION POLYMER POLYETHYLENE POLYIMIDE Adhesion and interfacial characteristics of metal/PI composite film modified by O-2 ion beam Article 10.1016/j.tsf.2008.06.022 1 THIN SOLID FILMS, v.517, no.3, pp.1191 - 1194 THIN SOLID FILMS 517 3 1191 1194 scie scopus 000262053800037 2-s2.0-56649120575 Materials Science, Multidisciplinary Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Materials Science Physics Article SURFACE MODIFICATION POLYMER POLYETHYLENE POLYIMIDE PI film Surface modification Adhesion Interface