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

Yuning Sun, Yenan Song, Dong Hoon Shin, Ki Nam Yun, Seok Gy Jeon, Jung Il Kim, Yahachi Saito, Cheol Jin Lee

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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/cm2) 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.

Original languageEnglish
Article number043104
JournalApplied Physics Letters
Volume104
Issue number4
DOIs
Publication statusPublished - 2014 Jan 27

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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