1992 Volume 31 Issue 3 Pages 407-412
Photocurrents in a layered photoreceptor consisting of amorphous silicon carbide as a carrier generation layer (CGL) and a 2, 4, 7 trinitro-9-fluorenone (TNF) doped polymer as a carrier transport layer (CTL) have been studied. The field dependence of the photocurrents obtained from photo-induced discharge curves were studied in order to obtain better understanding of the factors governing the limitation of photocurrents. The photocurrents depended on the thickness of the CTL and on the TNF content ratio relative to polymer. The photocurrents can be satisfactorily explained by carrier range limitation in the CTL From the comparison between calculated and experimental photocurrents for the photoreceptor, we estimated the values of the carrier range and the carrier lifetime in CTL. We found that the efficiency of generation of photocarrier in the CGL was high and that no interfacial barrier to retard carrier injection from CGL to CTL was observed.
