Oxide cathode

摘要

The invention provides an oxide cathode having an indirectly heated electron emitting layer disposed on a cathode base layer and an interface layer between the electron emitting layer and the base layer wherein the interface layer comprises a plurality of different chemical elements. The invention further provides a method of manufacturing an oxide cathode having an indirectly heated electron emitting layer disposed on a cathode base layer and an interface layer between the electron emitting layer and the base layer, the method comprising forming an interface layer comprising a plurality of chemical elements over the base layer, and forming an electron-emitting layer over the interface layer.