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Micromachines 2017, 8(5), 162; doi:10.3390/mi8050162

Design, Fabrication and Characterization of Molybdenum Field Emitter Arrays (Mo-FEAs)

Institute of Microelectronics, Peking University, Beijing 100871, China
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Author to whom correspondence should be addressed.
Academic Editor: Ai Qun Liu
Received: 17 April 2017 / Revised: 3 May 2017 / Accepted: 5 May 2017 / Published: 18 May 2017
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Abstract

We report on the fabrication of highly uniform field emitter arrays (FEAs) with an integrated self-aligned extraction gate from bulk molybdenum. All critical dimensions of the emitter tip were determined by a single process step of Inductively Coupled Plasma (ICP) etching. In addition, the height difference between the emitter tip and the gate plane was controlled by the thickness of the SiO2 dielectric layer. A 10 µm gate aperture molybdenum-FEAs (Mo-FEAs) at a typical 20 µm pitch with 6 µm height was achieved with 8.4 mA/cm2 current density at gate voltages of 110 V and the turn-on field of 1.4 V/µm. These self-aligned Mo-FEAs could be expanded to active larger areas to increase the emission current. View Full-Text
Keywords: self-aligned-gate; bulk molybdenum; field emitter array self-aligned-gate; bulk molybdenum; field emitter array
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhu, N.; Chen, J. Design, Fabrication and Characterization of Molybdenum Field Emitter Arrays (Mo-FEAs). Micromachines 2017, 8, 162.

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