A photoreceptor comprising: an electroconductive substrate; a photosensitive layer (33; 35, 37) located overlying the electroconductive substrate; and a crosslinked outermost layer located overlying the photosensitive layer (33; 35, 37) and including a crosslinked material and a carbazole compound selected from carbazole compounds having the following formulae, and: wherein each of R2 to R14 represents a hydrogen atom, a nitro group, a cyano group, a halogen atom, a hydroxyl group, a saturated or unsaturated aliphatic hydrocarbon group which optionally has a substituent, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted alkoxyl group, a substituted or unsubstituted aryloxy group, an amino group, a substituted or unsubstituted dialkylamino group, or a substituted or unsubstituted diarylamino group, wherein each of combinations R3 and R4, R4 and R5, R6 and R7, R7 and R8, R11 and R12, and R12 and R13 optionally shares bond connectivity to form a ring, wherein the carbazole compound has no crosslinkable group; wherein Ar1 represents a phenylene group, a biphenylene group, or a saturated or unsaturated aliphatic hydrocarbon group having 1 to 4 carbon atoms; and each of R28, R29, R30 and R31 represents a hydrogen atom, a saturated or unsaturated aliphatic hydrocarbon group which has 1 to 4 carbon atoms and which optionally has a substituent, or a substituted or unsubstituted aromatic hydrocarbon group, wherein the carbazole compound has no crosslinkable group; wherein Ar2 represents a phenylyne group, or a triphenyl amine group; and each of R33, R34, R35, R36, R37 and R38 represents a hydrogen atom, a saturated or unsaturated aliphatic hydrocarbon group which has 1 to 4 carbon atoms and which optionally has a substituent, or a substituted or unsubstituted aromatic hydrocarbon group, wherein the carbazole compound has no crosslinkable group. an electroconductive substrate; a photosensitive layer (33; 35, 37) located overlying the electroconductive substrate; and a crosslinked outermost layer located overlying the photosensitive layer (33; 35, 37) and including a crosslinked material and a carbazole compound selected from carbazole compounds having the following formulae, and: wherein each of R2 to R14 represents a hydrogen atom, a nitro group, a cyano group, a halogen atom, a hydroxyl group, a saturated or unsaturated aliphatic hydrocarbon group which optionally has a substituent, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted alkoxyl group, a substituted or unsubstituted aryloxy group, an amino group, a substituted or unsubstituted dialkylamino group, or a substituted or unsubstituted diarylamino group, wherein each of combinations R3 and R4, R4 and R5, R6 and R7, R7 and R8, R11 and R12, and R12 and R13 optionally shares bond connectivity to form a ring, wherein the carbazole compound has no crosslinkable group; wherein Ar1 represents a phenylene group, a biphenylene group, or a saturated or unsaturated aliphatic hydrocarbon group having 1 to 4 carbon atoms; and each of R28, R29, R30 and R31 represents a hydrogen atom, a saturated or unsaturated aliphatic hydrocarbon group which has 1 to 4 carbon atoms and which optionally has a substituent, or a substituted or unsubstituted aromatic hydrocarbon group, wherein the carbazole compound has no crosslinkable group; wherein Ar2 represents a phenylyne group, or a triphenyl amine group; and each of R33, R34, R35, R36, R37 and R38 represents a hydrogen atom, a saturated or unsaturated aliphatic hydrocarbon group which has 1 to 4 carbon atoms and which optionally has a substituent, or a substituted or unsubstituted aromatic hydrocarbon group, wherein the carbazole compound has no crosslinkable group.