Electron emission mechanism of diamond characterized using combined x-ray photoelectron spectroscopy/ultraviolet photoelectron spectroscopy/field emission spectroscopy system

Hisato Yamaguchi, Takatoshi Yamada, Masato Kudo, Yuji Takakuwa, Ken Okano

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Clarification on electron emission mechanism of diamond is one essential approach to realize the clear vision of vacuum nanoelectronics. Electric field of less than 5 Vμm is enough to extract electrons from diamond, whereas field of one to two orders of magnitude higher is needed to extract electrons from conventional metal emitter tips. Diamond has various advantages as an electron emitter in addition to the low-threshold voltage, such as negative electron affinity and high thermal conductivity. The difficulty in clarification of electron emission mechanism is the factor preventing diamond from being used in a practical way. In this study, combined spectroscopy of x-ray photoelectron spectroscopy/ultraviolet photoelectron spectroscopy/field emission spectroscopy was performed to characterize the electron emission mechanism of diamond. The results indicated the first successful observation of applied voltage dependence on the origin of field-emitted electrons.

Original languageEnglish
Article number202101
JournalApplied Physics Letters
Volume88
Issue number20
DOIs
Publication statusPublished - 2006 May 15

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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