Photocathode, photoelectric conversion tube, image intensifier, and photomultiplier tube

摘要

The present invention improves sensitivity of the ultraviolet band of a photoelectric surface. A photoelectric surface 1 includes a window material 2 that transmits ultraviolet rays, a conductive film 3 that is formed on the window material 2 and has conductivity, an intermediate film 4 that is formed on the conductive film 3 and is formed of MgF 2 , and a photoelectric conversion film 6 that is formed on the intermediate film 4 and is formed of CsTe. Since the photoelectric surface 1 includes the intermediate film 4 formed of MgF 2 , the sensitivity of the ultraviolet band is improved.