Field emission from single-crystalline HfC nanowires

Journal Article · Mon Mar 12 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3694047· OSTI ID:22025467

Yuan, Jinshi; Tang, Jie ^[1]; Han, Zhang ^[2]; Shinya, Norio; Nakajima, Kiyomi ^[1]; Qin, Lu-Chang ^[3]

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1. National Institute for Materials Science, Tsukuba, Ibaraki 305-0047 (Japan)
2. International Center for Young Scientist, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047 (Japan)
3. Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255 (United States)

Single HfC nanowire field emitter/electrode structures have been fabricated using nano-assembling and electron beam induced deposition. Field ion microscopy has been applied to study the atomic arrangement of facets formed on a field evaporation-modified HfC nanowire tip. Field evaporation and crystal form studies suggest that the {l_brace}111{r_brace} and {l_brace}110{r_brace} crystal planes have lower work functions, while the {l_brace}100{r_brace}, {l_brace}210{r_brace}, and {l_brace}311{r_brace} planes have higher work functions. Field emission measurement permits us to obtain that the work function of the {l_brace}111{r_brace} crystal plane is about 3.4 eV.

• OSTI ID: 22025467
• Journal Information: Applied Physics Letters, Vol. 100, Issue 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CRYSTAL STRUCTURE
ELECTRON BEAMS
ENERGY BEAM DEPOSITION
EV RANGE
EVAPORATION
FIELD EMISSION
HAFNIUM CARBIDES
ION MICROSCOPY
MONOCRYSTALS
QUANTUM WIRES
WORK FUNCTIONS