On the enhancement of field emission performance of ultrananocrystalline diamond coated nanoemitters

Journal Article · Mon Aug 06 00:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2768880· OSTI ID:21016094

Tzeng, Y -F; Lee, Y -C; Lee, C -Y; Lin, I -N; Chiu, H -T ^[1]

---

1. Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu 30043, Taiwan (China)

Ultrananocrystalline diamond (UNCD) nanoemitters were synthesized by a microwave plasma enhanced chemical vapor deposition process using silicon nanowires (SiNWs) as the template. Preseeding markedly enhances the nucleation of diamond on the SiNW templates, resulting in UNCD grains of smaller size and uniform distribution, which leads to significantly improved electron field emission (EFE) properties. The EFE for UNCD nanoemitters can be turned on at (E{sub 0}){sub UNCD-NE}=4.4 V/{mu}m, achieving large EFE current density, (J{sub e}){sub UNCD-NE}=13.9 mA/cm{sup 2} at an applied field of 12 V/{mu}m, which is comparable with that of carbon nanotubes, but with much better processing reliability.

• OSTI ID: 21016094
• Journal Information: Applied Physics Letters, Vol. 91, Issue 6; Other Information: DOI: 10.1063/1.2768880; (c) 2007 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
CHEMICAL VAPOR DEPOSITION
CURRENT DENSITY
DIAMONDS
ELECTRON EMISSION
ELECTRONS
FIELD EMISSION
GRAIN SIZE
NANOTUBES
NUCLEATION
PLASMA
QUANTUM WIRES
SEMICONDUCTOR MATERIALS
SILICON
THIN FILMS