Title :
Remarkably low value of work function on W(100) produced by Y-O composite layer
Author :
Kawakubo, T. ; Saito, Y. ; Miyamoto, N. ; Nakane, H. ; Adachi, H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Muroran Inst. of Technol., Japan
Abstract :
Electrical dipoles on a metal surface is believed to reduce the work function of the metal remarkably. Here, it is shown that slight yttrium layer with oxygen remarkably reduce the work function on W(100) surface. The reduced amount is much larger than Zr-O dipole on W(100). We believe YO/W(100) surface has a potential ability much better than the ZrO/W(100), which is widely adopted for scanning electron microscopes as bright cathodes.
Keywords :
composite materials; scanning electron microscopy; tungsten; work function; yttrium compounds; Y-O composite layer; YO-W; YO-W(100) surface; cathodes; electrical dipoles; scanning electron microscopy; work function; yttrium layer; Electron emission; Equations; Fluorescence; Heating; Needles; Scanning electron microscopy; Tungsten; Voltage; Yttrium; Zirconium;
Conference_Titel :
Vacuum Microelectronics Conference, 2003. Technical Digest of the 16th International
Conference_Location :
Osaka, Japan
Print_ISBN :
4-8181-9515-4
DOI :
10.1109/IVMC.2003.1223011
