Field emission properties of the globe-like diamond microcrystalline aggregate films grown by MPCVD

• Published in: Physica. B, Condensed matter Vol. 405; no. 1; pp. 318 - 321
• Main Authors: Gao, Jinhai, Zhao, Limin, Hao, Haoshan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 2010; Elsevier
• Subjects: Agglomeration; Aggregates; Chemical vapor deposition; Condensed matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Current density; Diamond; Diodes; Electron and ion emission by liquids and solids; impact phenomena; Exact sciences and technology; Field emission; Field emission, ionization, evaporation, and desorption; MPCVD; Physics; Raman spectroscopy; Stability; Diamond; Field emission; 81.15.GH; MPCVD; Raman spectroscopy; 79.70.+q; Raman spectra; Diamonds; Electron field emission; PECVD; Microstructure; Microcrystal; Island structure
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2009.08.081

The globe-like diamond microcrystalline aggregate films were fabricated by microwave plasma chemical vapor deposition (MPCVD) method and the field emission properties were investigated using a diode structure in vacuum. It was found that the films had a complex structure with globe-like microcrystalline diamond aggregations grown on the a-C surface and these films exhibited good electron emission properties and stability. The turn-on field of 1.1 V/μm and the current density of 6.6 mA/cm 2 were obtained for these diamond microcrystalline aggregate films at the electric field of 2.73 V/μm.