Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge mobility determination by current extraction under linear
  increasing voltages: the case of non-equilibrium charges and field-dependent
  mobilities   The method of current extraction under linear increasing voltages (CELIV)
allows for the simultaneous determination of charge mobilities and charge
densities directly in thin films as used in organic photovoltaic cells (OPV).
In the past, it has been specifically applied to investigate the interrelation
of microstructure and charge transport properties in such systems. Numerical
and analytical calculations presented in this work show that the evaluation of
CELIV transients with the commonly used analysis scheme is error prone once
charge recombination and, possibly, field dependent charge mobilities are taken
into account. The most important effects are an apparent time-dependence of
charge mobilities and errors in the determined field dependencies. Our results
implicate that reports on time-dependent mobility relaxation in OPV materials
obtained by the CELIV technique should be carefully revisited and confirmed by
other measurement methods.

15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
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The categories of this paper are: eess
14
The categories of this paper are: math-ph