Title :
Electron transport in thin films of polystyrene
Author :
Watson, P. Keith
Author_Institution :
Xerox Corp., Webster, NY, USA
Abstract :
The transport of electrons in polystyrene has been studied by charging thin films of the polymer with a low-energy (2 keV) electron beam and observing the decay of the resulting surface potential. This potential decays logarithmically with time, indicating that the electrons are detrapped over a long period. A time-dependent demarcation energy is used to analyze the detrapping process, and from this analysis information is obtained about the energy distribution of electron traps in the polymer. Above the glass transition temperature, detrapping is enhanced by the diffusion of defects at a rate determined by the micro-Brownian motion of the polymer chains
Keywords :
electron traps; electronic conduction in insulating thin films; glass transition (polymers); organic insulating materials; polymer films; surface potential; electron beam charging; electron traps; glass transition temperature; micro-Brownian motion; polymer chains; polystyrene; surface potential; thin films; time-dependent demarcation energy; Dielectrics and electrical insulation; Electron beams; Electron traps; Glass; Information analysis; Polymer films; Surface charging; Temperature; Thermal conductivity; Transistors;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on
Conference_Location :
Trondheim
DOI :
10.1109/ICSD.1989.69205
