Synthesis and Field Emission Properties of Diamond Microcrystalline-Aggregate Array


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The diamond microcrystalline-aggregate array was fabricated by microwave plasma chemical vapor deposition (MPCVD) method. The ceramic with a Ti mental layer is used as substrate. The diamond array was evaluated by Raman scattering spectroscopy, x-ray diffraction spectrum (XRD), scanning electron microscopy (SEM). The field emission properties were tested by using a diode structure in a vacuum. A phosphor-coated indium tin oxide (ITO) anode was used for observing and characterizing the field emission. It was found that the diamond microcrystalline-aggregate array exhibited better electron emission properties. The turn-on field is only 1.1V/μm and a emission current density as high as 1mA/cm2 was obtained under an applied field of 3.3V/μm. The good field emission properties of the diamond microcrystalline-aggregate array are discussed relating to microstructure and electrical conductivity.



Edited by:

Yun Wu and Yijin Wu






J. H. Gao et al., "Synthesis and Field Emission Properties of Diamond Microcrystalline-Aggregate Array", Advanced Materials Research, Vol. 664, pp. 596-599, 2013

Online since:

February 2013




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DOI: 10.1016/s0925-9635(98)00420-8

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