32 nd International Field Emission Symposium / 32ème Symposium International d'Emission de Champ
J. Phys. Colloques 47 (1986) C2-203-C2-208
DOI: 10.1051/jphyscol:1986230
ATOM-PROBE STUDY OF CONDUCTING POLYMER : POLYPYRROLE
O. NISHIKAWA et H. KATODepartment of Materials Science and. Engineering, The Graduate School at Nagatsuta, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 227, Japan
Abstract
A thin layer of conducting polymer, polypyrrole, was deposited on a Pt tip and mass analyzed by the atom-probe. The variation of the mass spectrum of fragment ions of the polypyrrole with exposure time to air indicates that the first stage of oxidation proceeds fairly rapidly but the transition to the fully oxidized stage is rather slow. The estimated thickness of the fully oxidized section is about 45 nm in three months.