TY  - JOUR
A1  - Steyrleuthner, Robert
A1  - Schubert, Marcel
A1  - Jaiser, Frank
A1  - Blakesley, James C.
A1  - Chen, Zhihua
A1  - Facchetti, Antonio
A1  - Neher, Dieter
T1  - Bulk electron transport and charge injection in a high mobility n-type semiconducting polymer
N2  - Bulk electron transport in a high mobility n-type polymer is studied by time-of-flight photocurrent measurements and electron-only devices. Bulk electron mobilities of similar to 5 x 10(-3) cm(2)/Vs are obtained. The analysis of the electron currents suggests the presence of an injection barrier for all conventionally used low workfunction cathodes.
Y1  - 2010
UR  - http://www3.interscience.wiley.com/cgi-bin/jhome/10008336
U6  - https://doi.org/10.1002/adma.201000232
SN  - 0935-9648
ER  - 
TY  - JOUR
A1  - Bange, Sebastian
A1  - Schubert, Marcel
A1  - Neher, Dieter
T1  - Charge mobility determination by current extraction under linear increasing voltages : case of nonequilibrium charges and field-dependent mobilities
N2  - The method of current extraction under linear increasing voltages (CELIV) allows for the simultaneous determination of charge mobilities and charge densities directly in thin-film geometries as used in organic photovoltaic (OPV) cells. 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.
Y1  - 2010
UR  - http://prb.aps.org/
U6  - https://doi.org/10.1103/Physrevb.81.035209
SN  - 1098-0121
ER  -