Abstract
To obtain highly stable electron emission with a narrow energy width, we have investigated the electron emission characteristics of tungsten Schottky emitters made with various reservoir materials. The work functions of the adsorbed layers were calculated by using a simple electric dipole model, and we found that M1/O/W (M1=Sc, V, Y, Nb or La) and M2/N/W (M2=Ti, V, Y, Zr, Nb or La) compositions were expected to have a lower work function than that of the conventional Zr/O/W Schottky emitter. We formed M1/O/W and M2/N/W Schottky emitters and measured their electron emission properties. The Sc/O/W, Nb/O/W, and Y/N/W Schottky emitters produced a continuous and confined electron beam at tip temperatures below 1800 K of the Zr/O/W Schottky emitter, and the energy widths of their Schottky-emitted electrons were equal to or narrower than the 0.4 eV of the Zr/O/W Schottky emitter. The Sc/O/W Schottky emitter had the narrowest width at 0.25 eV.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
