(a) x (nm) (b) E (V/cm)

Scott et al. (1990) compared the residual potentials of photoreceptors prepared with various substituted aminobenzaldehyde hydrazones in the transport layer and Chlorodiane Blue in the generation layer. They reported that high residual potentials correlate with high oxidation potentials of the donor compound of the transport layer. This was explained by a field at the interface between the generation and transport layers that creates a barrier to hole injection.