| 摘要 |
PURPOSE:To obtain a photosensitive body which has excellent electric chargeability and low residual potential and is good in both positive and negative electric charge by constituting a barrier layer by alternately laminating thin microcrystalline silicon films and thin amorphous silicon films contg. at least one kind of element selected from carbon, oxygen and nitrogen. CONSTITUTION:The barrier layer 2 of the electrophotographic sensitive body having a conductive base 1, the barrier layer 2 and a photoconductive layer 3 is constituted by alternately laminating the thin microcrystalline silicon films and the thin amorphous silicon films contg. at least one kind of the element selected from carbon, oxygen and nitrogen. The content of the elements is specified preferably to 5-30atom.%, more preferably to 5-20atom.%. For example, an electric charge transfer layer 2 is formed on the conductive base 1 and the barrier layer 2 and an electric charge generating layer 6 thereon and a surface layer 4 is formed thereon, respectively. The barrier layer 2 suppresses the flow of the electric charge between the base 1 and the charge generating layer 5 to enhance the charge holding function on the surface of the photosensitive layer and the chargeability of the photosensitive body. The running performance of a carrier is thereby improved and the electrophotographic sensitive body having the excellent charge characteristics on account of high resistance is obtd. |
