The effect of temperature on carrier transport in molecularly doped polycarbonate

Tyutnev, A. P.; Ikhsanov, R. Sh.; Grach, E. P.; Saenko, V. S.; Pozhidaev, E. D.

doi:10.1134/s001814391101019x

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…After transition to the multiple trapping model with a Gaussian distribution of traps [22][23][24][25][26], we assume that and (the mobility of quasi free holes in the transport zone) take the same values as those in the Gaussian disorder model. The frequency factor of the model in the zero electric field is = , and the lifetime of quasi free holes prior to trapping is = and is independent of the field.…”

Section: Resultsmentioning

confidence: 99%

Hole transport in polystyrene and polycarbonate doped with polar dopants

et al. 2012

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Hole transport in PS and PC doped with low molecular mass dopants with dipole moments larger than 3D is investigated. Both near surface and bulk charge carrier generation techniques are used. There is good agreement between the experimentally measured values of hole mobility and the published data. It is shown that, for the investigated systems, the hole transport is nonequilibrium and is well described by the multiple trapping model with the Gaussian trap distribution over energy. The presence of a flat plateau on the time of flight curves does not necessarily mean establishment of the quasi equilibrium hole transport in the system.

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Section: Resultsmentioning

confidence: 99%

Hole transport in polystyrene and polycarbonate doped with polar dopants

et al. 2012

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“…Finally, the lifetime of the conducting holes τ 0 is such that ν 0 τ 0 = 3. This relationship is a direct consequence of the fact that in the GDM approximately one third of the hopping centers are effectively traps [13].…”

Section: Gaussian Disorder Model Analysis and Numerical Calculationsmentioning

confidence: 99%

Analysis of the time-of-flight transients in molecularly doped polymers using the Gaussian disorder model

Tyutnev

Ikhsanov

Saenko

et al. 2011

J. Phys.: Condens. Matter

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Using published data for four molecularly doped polymers, which exhibit flat plateaus on the time-of-flight transients, we compared theoretical curves with experimental ones. The numerical calculations as well as parameter values were based on the Gaussian disorder model. In no case were flat plateaus predicted to appear. According to theory carrier transit should proceed in the non-equilibrium regime. We saw close agreement for the transit times in weakly polar polymers even at high fields but only at elevated temperatures, while in highly polar polymers similar agreement occurred only at low fields. In addition, the Gaussian disorder model does not account for the current shape universality (regarding field variation) frequently observed experimentally in polar molecularly doped polymers.

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“…These findings required a refinement of the Gaussian disorder model conclusions concerning the form of time of flight curves [6].…”

Section: Introductionmentioning

confidence: 97%

The role played by a polymer matrix in the transfer of charge carriers in molecularly doped polumers

Tyutnev

Ikhsanov

Saenko

et al. 2012

Russ. J. Phys. Chem. B

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Transient current curves were recorded for polystyrene and polycarbonate doped with 15 wt % tri tolylamine using both surface and volume charge carrier generation. The multiple trapping model was used to perform numerical calculations of time of flight curves for the published Gaussian disorder model param eters. The calculation results were compared with the experimental data. It was shown that the experimental and calculated curves satisfactorily coincided. The flat plateau observed in time of flight curves should not be associated with the establishment of a quasi equilibrium transport regime.

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The effect of temperature on carrier transport in molecularly doped polycarbonate

Cited by 3 publications

References 10 publications

Hole transport in polystyrene and polycarbonate doped with polar dopants

Hole transport in polystyrene and polycarbonate doped with polar dopants

Analysis of the time-of-flight transients in molecularly doped polymers using the Gaussian disorder model

The role played by a polymer matrix in the transfer of charge carriers in molecularly doped polumers

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