Generalized Poole Frenkel PF effect with donors distributed in energyReport as inadecuate

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Abstract : A further step in generalization of PF effect is got over, in considering the effect of a distribution of donors in energy, within the gap. Various laws of repartition are studied. Uniform distributions are first treated extensively. Computer simulations pointed out very conspicuous similarities with the one donor level case. Field-induced ionization is then derived for exponential distributions. An exponential law, given sometimes in literature, is analyzed throughout. Conditions of solvability of the basic differential equation are indicated. Moreover derivation and simulation are extended to a system of two uniform bands. Finally, an approximate method of resolution is proposed, when distributions of any shape are concerned.

Keywords : digital simulation energy gap impurity electron states ionisation Poole Frenkel effect computer simulations repartition laws resolution method field induced ionization donors PF effect one donor level case exponential distributions exponential law basic differential equation uniform bands

Author: R. Ongaro A. Pillonnet



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