The DX centre
T.N. Morgan
Semiconductor Science and Technology
It has recently been reported that thin films of perfluoropolyethers (PFPE's) can be bonded to a variety of substrates under illumination of 185-nm ultraviolet (UV) light. In this paper we examine the bonding of thin perfluoropolyether films by low-energy electrons and UV light. It is shown that the bonding takes place through interaction of the perfluoropolyether molecule, with a low-energy photoelectron created by excitation of the substrate by the UV photons. The perfluoropolyether molecule subsequently undergoes a dissociative electron attachment, resulting in the formation of a radical and a F- ion. It is likely that radical propagation and termination steps then cross-link the polymer and attach it to the substrate. The similarities and differences between electron-bonded and UV-bonded perfluoropolyether films are discussed. © 1992, American Chemical Society. All rights reserved.
T.N. Morgan
Semiconductor Science and Technology
F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
Julien Autebert, Aditya Kashyap, et al.
Langmuir
Xikun Hu, Wenlin Liu, et al.
IEEE J-STARS