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полный информационныйкраткий
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Karabutov A.V., Frolov V.D., Konov V.I., Ralchenko V.G., Gordeev S.K., Belobrov P.I.
Заглавие : Low-field electron emission of diamond/pyrocarbon composites
Колич.характеристики :6 с
Место публикации : J. Vac. Sci. Technol. B: A V S AMER INST PHYSICS, 2001. - Vol. 19: 13th International Vacuum Microlectronics Conference (AUG 13-17, 2000, GUANGZHOU, PEOPLES R CHINA), Is. 3. - P965-970. - ISSN 1071-1023, DOI 10.1116/1.1368669
Примечания : Cited References: 31
Предметные рубрики: CVD DIAMOND FILMS
SCANNING-TUNNELING-MICROSCOPY
AMORPHOUS-CARBON
COLD-CATHODE
Аннотация: Properties of the field electron emission for diamond/pyrocarbon nanocomposites produced from diamond particles surrounded by an sp(2)-bonded pyrocarbon matrix are considered as functions of a size of diamond particles selected in the range of 5 nm - 5 mum, and of an average thickness of the pyrocarbon shell controlled by the pyrocarbon/diamond mass ratio varied from 0 to 0.5. The low-threshold emission at fields of greater than or equal to1 V/mum with ''no activation/no hysteresis'' I-V behavior was observed for these materials using tungsten tip microprobes as well as a fluorescent screen. A specially designed scanning tunneling-field emission microscope was used for simultaneous mapping of field emission intensity, topography, work function, and electrical resistivity to study the mechanisms of the emission from the composites and well-emitting chemical vapor deposition diamond films. It was found that for both of the materials emission centers are associated with interfaces between diamond and sp2-bonded carbon phases. Possible mechanisms of the low-field electron emission for the diamond/graphite composites including local field enhancement are analyzed. A model of the low-field emission based on quantum well effect at the diamond/graphite interface is proposed and discussed. (C) 2001 American Vacuum Society.
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