Abstract
Multitrapping transport of carriers through exponential band tails is studied for carriers generated at an arbitrary position in the device in presence of a linearly varying electric field, thus generalizing the usual treatment of time of flight experiments. An analytical expression is found for the free carrier density distribution n(x,t) for values of the dispersion parameter 0 < α < 1. In the case α = 1/2, analytical solutions are given for the transient current I(t) and the induced charge Q(t). Comparison with previous calculations is made for the special case of uniform electric field and carriers initially generated at one interface.
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