Journal of Vacuum Science & Technology A Vacuum Surfaces and Films · 1991 · 20 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials ChemistryPolymer ChemistryThin FilmsChemical Vapor DepositionInfrared SpectroscopyOrganic Electronic MaterialsPolymer CharacterizationPolymer SurfacesPolymer Thin FilmsCopper DepositionFourier TransformInfrared Reflection-absorption SpectroscopyOrganic Thin FilmsPolyimidesSpectral ShiftsSpectral Signatures
The interaction of evaporated copper deposits with vapor-deposited, vacuum-cured thin films of pyromellitic dianhydride-oxydianiline (PMDA-ODA) polyimide was studied using x-ray photoelectron spectroscopy (XPS) and Fourier transform infrared reflection absorption spectroscopy (FTIRAS). XPS and FTIRAS measurements indicate a preferential interaction of the copper with the imide part of the molecule, some interaction with the ODA ether oxygen and only a very weak interaction with the phenyl rings. The spectral changes observed show a dependence on the rate of the copper deposition.