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Magnetic-field effect in organic photoconductive devices studied by time-of-flight
Journal article   Open access   Peer reviewed

Magnetic-field effect in organic photoconductive devices studied by time-of-flight

F Wang, J Rybicki, K. A Hutchinson and M Wohlgenannt
Physical review. B, Condensed matter and materials physics, Vol.83(24), 241202(R)
06/2011
DOI: 10.1103/PhysRevB.83.241202
url
https://doi.org/10.1103/PhysRevB.83.241202View
Published (Version of record) Open Access

Abstract

It is well established that weak applied magnetic fields of several tens of millitesla can lead to a change of several percent in the continuous-wave photocurrent in organic semiconductor devices. However, it remains to be determined whether the applied magnetic field modifies the photocarrier generation efficiency or its mobility or both. We use magnetic-field-dependent time-of-flight spectroscopy to disentangle these two possibilities. We find evidence that the magnetic field leads to a decrease in the photocarrier time-of-flight.

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