| 摘要 |
The present invention provides an electrophotographic photosensitive member having an a-SiC upper charge injection inhibition layer and an a-SiC surface layer, which is superior in adhesiveness, suppresses the surface deterioration, is superior in sensitivity characteristics and charging characteristics, and can keep an adequate image-forming capability for a long period of time. The upper charge injection inhibition layer contains 10 atom ppm or more and 30,000 atom ppm or less of the Group 13 atoms or the Group 15 atoms of the Periodic Table with respect to silicon atoms in the upper charge injection inhibition layer, and the ratio (C/(Si+C)) of the number of carbon atoms in the upper charge injection inhibition layer with respect to the sum of the number of silicon atoms and the number of the carbon atoms in the upper charge injection inhibition layer is 0.10 or more and 0.60 or less; and the sum of the atom density of the silicon atoms and the atom density of the carbon atoms in the surface layer is 6.60×1022 atoms/cm3 or more, and the ratio (C/(Si+C)) of the number of carbon atoms with respect to the sum of the number of silicon atoms and the number of the carbon atoms in the surface layer is 0.61 or more and 0.75 or less. |
