Similarities in the 'cold' electron emission characteristics of diamond coated molybdenum electrodes and polished bulk graphite surfaces

摘要: Details are given of an experimental study field emission characteristics diamond-coated Mo electrodes: in particular, a transparent anode imaging technique was used to monitor the spatial distribution individual centres. This has revealed important fact that substantial can be obtained at fields as low 5 MV m-1. In order investigate physical nature process, comparative been made from electrode and bulk carbon graphite electrode. Significantly, it found both graphite-rich diamond film diamond-rich shared similar high-emissivity characteristic, with high surface density sites. It also noted CVD films have two properties favourable low-field cold electron emission, namely their negative affinity presence inclusions.