Diamond transmission dynode and photomultiplier or imaging device using same

This invention relates to thin film transmission dynodes, and in particular to a method of producing such dynodes. The invention also relates to a photomultiplier or imaging device incorporating such a thin film dynode. A diamond transmission dynode and photocathode are described which include a thin layer of a crystalline semiconductive material. The semiconductive material is preferably textured with a (100) orientation. Metallic electrodes are formed on the input and output surfaces of the semiconductive material so that a bias potential can be applied to enhance electron transport through the semiconductive material. An imaging device and a photomultiplier utilizing the aforesaid transmission dynode and/or photocathode are also described.