Accession Number : ADA320919

Title :   Preparation of High-Performance Field Emission Cathodes by Deposition of Low Work Function Films.

Descriptive Note : Final technical rept. 1 Apr 95-30 Sep 96,

Corporate Author : LINFIELD RESEARCH INST MCMINNVILLE OR

Personal Author(s) : Davis, Paul R.

PDF Url : ADA320919

Report Date : 31 DEC 1996

Pagination or Media Count : 18

Abstract : The results of the rather preliminary HfC film experiments on a Mo FEA do not suggest better performance than ZrC on Mo FEAs. However, we believe there is substantial hope for optimism. The study of ZrC and HfC films deposited onto macroscopic Mo substrates shows approximately the same work function for both systems, approximately 3.0 eV. Our earlier work with single crystal free-standing emitters of ZrC and HfC suggested an even lower ultimate work function for HfC than for ZrC, and an apparently better emission stability. We believe that further studies of deposited films of HfC onto field emitters would allow this lower work function to be realized there as well.

Descriptors :   *FIELD EMISSION, *CATHODES(ELECTRON TUBES), ZIRCONIUM COMPOUNDS, HAFNIUM COMPOUNDS, VOLTAGE, CURRENT DENSITY, SINGLE CRYSTALS, MOLYBDENUM, ELECTRICAL CONDUCTIVITY, MICROELECTRONICS, WORK FUNCTIONS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE