Temperature enhancement of secondary electron emission from hydrogenated diamond films

Journal Article · Tue Sep 15 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3224881· OSTI ID:21361839

Stacey, A; Prawer, S; Rubanov, S ^[1]; Akhvlediani, R; Michaelson, Sh; Hoffman, A ^[2]

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1. School of Physics, University of Melbourne, Vic. 3010 (Australia)
2. Schulich Faculty of Chemistry, Technion- Israel Institute of Technology, Haifa 32000 (Israel)

The effect of temperature on the stability of the secondary electron emission (SEE) yield from approx100-nm-thick continuous diamond films is reported. At room temperature, the SEE yield was found to decay as a function of electron irradiation dose. The SEE yield is observed to increase significantly upon heating of the diamond surface. Furthermore, by employing moderate temperatures, the decay of the SEE yield observed at room temperature is inhibited, showing a nearly constant yield with electron dose at 200 deg. C. The results are explained in terms of the temperature dependence of the electron beam-induced hydrogen desorption from the diamond surface and surface band bending. These findings demonstrate that the longevity of diamond films in practical applications of SEE can be increased by moderate heating.

• OSTI ID: 21361839
• Journal Information: Journal of Applied Physics, Vol. 106, Issue 6; Other Information: DOI: 10.1063/1.3224881; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DESORPTION
DIAMONDS
ELECTRON BEAMS
ELECTRON EMISSION
ELECTRONS
HEATING
HYDROGEN
HYDROGENATION
RADIATION DOSES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
BEAMS
CARBON
CHEMICAL REACTIONS
DOSES
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
FERMIONS
FILMS
LEPTON BEAMS
LEPTONS
MINERALS
NONMETALS
PARTICLE BEAMS
SORPTION
TEMPERATURE RANGE