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Electron Emission Mechanism of Heavily Phosphorus‐Doped Diamond with Oxidized Surface
Author(s) -
Masuzawa Tomoaki,
Neo Yoichiro,
Mimura Hidenori,
Okano Ken,
Yamada Takatoshi
Publication year - 2019
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201801025
Subject(s) - diamond , field electron emission , ultraviolet photoelectron spectroscopy , electron , x ray photoelectron spectroscopy , spectroscopy , materials science , doping , atomic physics , quantum tunnelling , material properties of diamond , analytical chemistry (journal) , chemistry , optoelectronics , physics , nuclear magnetic resonance , quantum mechanics , chromatography , composite material
In this study, electron emission model is investigated for heavily phosphorus‐doped n‐type diamond having positive electron affinity surface. Ultraviolet photoelectron spectroscopy (UPS) is conducted to determine the band structure of the diamond. In addition, combined UPS and field‐emitted electron spectroscopy is carried out in order to determine the energy level, from which electrons are emitted. The combined spectroscopy suggests that electrons are emitted from the conduction band of the diamond, and the emission mechanism is dominated by electron tunneling through surface potential barrier.