Cesiated thin-film field-emission microcathode arrays
- 24 August 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (8) , 997-999
- https://doi.org/10.1063/1.107699
Abstract
The effect of adsorbed cesium on the performance of thin-film field-emission microcathode arrays with molybdenum tips is discussed. A reduction in the voltage required to extract an average of 1 nA per tip from 50 to 15 V is reported. Cesiated arrays have exhibited stable performance when operated continuously for up to 650 h at array current densities up to 100 A/cm2, with minimal leakage current. Using the Fowler–Nordheim theory, analysis of current-voltage characteristics of a heavily cesiated emitter array gives values for the emitting area, work function, and geometrical factor.Keywords
This publication has 7 references indexed in Scilit:
- Caractéristiques énergétiques de cathodes à micropointes à émission de champRevue de Physique Appliquée, 1987
- Submonolayer films on the surface of metalsSoviet Physics Uspekhi, 1977
- Physical properties of thin-film field emission cathodes with molybdenum conesJournal of Applied Physics, 1976
- Field-Electron-Microscopy Studies of Cesium Layers on Various Refractory Metals: Work Function ChangeThe Journal of Chemical Physics, 1968
- Experimentelle Untersuchungen zur Prüfung der wellenmechanischen Theorie der FeldelektronenemissionThe European Physical Journal A, 1940
- Thermionic effects caused by vapours of alkali metalsProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1925
- Thermionic Effects Caused by Alkali Vapors in Vacuum TubesScience, 1923