An electrophotographic photoreceptor is disclosed. The photoreceptor comprises a conductive substrate and a light-sensitive layer containing a carrier-transfer material represented by the following Formula I: ##STR1## wherein Ar is an alkyl group, an aralkyl group, an aryl group or a heterocyclic group; X is --CH.sub.2 CH.sub.2 -- group or --CH.dbd.CH-- group: R.sub.1, R.sub.2 and R.sub.3 are each a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group.The photoreceptor is excellent in electrifiability and sensitivity and capable of maintaining a stable performance.