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Finally, the relative efficiencies of these systems as hole or electron conductors is discussed.
Metals such as iron are good electron conductors and can act as electrodes.
The transparent conductors are pure electron conductors.
Electrochemical cell - a system in which two electron conductors (the electrodes) are in contact with a conducting solution of ions (the electrolyte).
Fowler-Nordheim tunneling is the wave-mechanical tunneling of electrons through a rounded triangular barrier created at the surface of an electron conductor by applying a very high electric field.
Electrochemistry is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte), and which involve electron transfer between the electrode and the electrolyte or species in solution.