Carbon nanowalls in field emission cathodes

• Published in: Tekhnologii͡a︡ i konstruirovanie v ėlektronnoĭ apparature no. 6; pp. 34 - 43
• Main Authors: Belyanin, A. F., Borisov, V. V., Daghetsyan, S. A., Evlashin, S. A., Pilevsky, A. A., Samorodov, V. A.
• Format: Journal Article
• Language: English
• Published: Politehperiodika 01-12-2017
• Subjects: carbon nanowalls; electron microscopy; field emission cathodes; layered structures; Raman spectroscopy
• ISSN: 2225-5818; 2309-9992
• DOI: 10.15222/TKEA2017.6.34

The carbon nanowall (CNW) layers were grown from a gas mixture of hydrogen and methane, activated by a DC glow discharge, on Si substrates (Si/CNW layered structure). The second layer of CNW was grown either on the first layer (Si/CNW/CNW structure) or on Ni or NiO films deposited on the first CNW layer (Si/CNW/Ni/CNW and Si/CNW/NiO/CNW structures). The composition and structure of the resulting layered structures were studied using scanning electron microscopy, Raman spectroscopy, and X-ray diffractometry. It was found that annealing of Si/CNW structure in vacuum, growing of the second CNW layer on Si/CNW, as well as deposition of Ni or NiO films prior to the growing of the second CNW layer improve functional properties of field emission cathodes based on the electron-emitting CNW layers.