1967 Volume 40 Issue 9 Pages 2073-2077
In order to examine the effect of space-charge polarization in the course of drift-mobility measurements in anthracene single crystals, we employed a pulse electric field and measured the change in photoresponses according to the light-delay times. No distinct reduction of photoresponses was found, and the value of mobility was nearly the same as the one obtained by measurement with the conventional dc field. To obtain knowledge of the microscopic mobility in anthracene crystals, we also measured the photo-Hall effect of anthracene using the Redfield, Kobayashi and Brown method. The observed Hall mobility was in the range of 25–200 cm2/ V.sec. This large value of Hall mobility will be briefly discussed in terms of the multiple-trapping effect.
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