| 摘要 |
A method of manufacturing a photocathode for an electron tube whose active constituent is formed by a strongly P-conductive AIII-BV compound or mixed crystals of such compounds in which cesium is deposited on the surface of the cathode until after having reached a maximum the photosensitivity drops to a value lying between 10 percent and 50 percent that of the maximum. Thereafter, the surface of the cesium is exposed to oxygen to form Cs20 and these steps are repeated until an activating layer about 50-100 A. in thickness is formed. |
