Fabrication of carbon nanotube emitters on the graphite rod and their high field emission performance

Journal Article · Mon Jan 27 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4863415· OSTI ID:22280564

Sun, Yuning; Hoon Shin, Dong; Nam Yun, Ki ^[1]; Song, Yenan ^[2]; Jeon, Seok-Gy; Kim, Jung-Il ^[3]; Saito, Yahachi ^[4]

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1. School of Electrical Engineering, Korea University, Seoul 136-713 (Korea, Republic of)
2. Department of Micro/Nano Systems, Korea University, Seoul 136-713 (Korea, Republic of)
3. Korea Electrotechnology Research Institute, Ansan 127-56 (Korea, Republic of)
4. Department of Quantum Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603 (Japan)

Carbon nanotube (CNT) emitters with small emission area were fabricated on graphite rods using CNT films. By introducing the edge polishing process, the field emission performance of the CNT emitter was much improved, which showed a very high emission current of 6.34 mA (1.6 A/cm{sup 2}) under an applied electric field of 5.3 V/μm. It also indicates good long-term emission stability, which reveals no degradation in the emission current for 20 h. The emission patterns demonstrate uniform and well-focused electron beam spots. The enhanced field emission performance is mainly attributed to the suppressed edge emission after the edge polishing process.

• OSTI ID: 22280564
• Journal Information: Applied Physics Letters, Vol. 104, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NANOTUBES
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTRON BEAMS
FABRICATION
FIELD EMISSION
GRAPHITE
PERFORMANCE
PHASE STABILITY
POLISHING
RODS
THIN FILMS