ABSTRACT
A. The Poole-Frenkel Effect The Poole-Frenkel effect (Poole, 1916,1917; Frenkel, 1938a, 1938b) describes the reduction in ionization energy required to separate an electron from a fixed positive charge. For the one-dimensional case, the energy is
where A(E) is the ionization energy in the presence of a field, ACE = 0) the zerofield energy, (3PF = (e3/u ee0)1/2, and E the electric field. For e = 3.0, pPF = 4.40 x 10 4 eV (cm/V)1/2. Although largely discounted in recent years, arguments based on the Poole-Frenkel effect have been widely used to describe transport phenomena and are discussed in Chaps. 7 and 8.
