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Time of Flight Transients in the Dipolar Glass Model | | S.V. Novikov
; A.P. Tyutnev
; L.B. Schein
; | | Date: |
20 Mar 2013 | | Abstract: | Using Monte Carlo simulation we investigated time of flight current
transients predicted by the dipolar glass model for a random spatial
distribution of hopping centers. Behavior of the carrier drift mobility was
studied at room temperature over a broad range of electric field and sample
thickness. A flat plateau followed by $jpropto t^{-2}$ current decay is the
most common feature of the simulated transients. Poole-Frenkel mobility field
dependence was confirmed over 5 to 200 V/$mu$m as well as its independence of
the sample thickness. Universality of transients with respect to both field and
sample thickness has been observed. A simple phenomenological model to describe
simulated current transients has been proposed. Simulation results agree well
with the reported Poole-Frenkel slope and shape of the transients for a
prototype molecularly doped polymer. | | Source: | arXiv, 1303.4855 | | Services: | Forum | Review | PDF | Favorites | |
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