| http://www.w3.org/ns/prov#value | - N,N'-Diphenyl-N,N'-bis(3-methylphenyl)-[2,2'-dimethyl-1,1'-biphenyl]-4,4'-diamine: ##STR12## The electrically active layer, i.e., the photogenerated hole transport layer, is substantially non-absorbing to visible light or radiation in the region of intended use, but is active in that it allows the injection of photogenerated holes from the photoconductive layer, i.e. charge generation layer, and
|
