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Title: | Local probing of the enhanced field electron emission of vertically aligned nitrogen-doped diamond nanorods and their plasma illumination properties | Authors: | Deshmukh, S. KAMATCHI JOTHIRAMALINGAM, Sankaran Srinivasu, K. Korneychuk, S. Banerjee, D. Barman, A. Bhattacharya, G. Phase, D. M. Gupta, M. Verbeeck, J. Leou, K. C. Lin, I. N. HAENEN, Ken Roy, Susanta S. |
Issue Date: | 2018 | Source: | DIAMOND AND RELATED MATERIALS, 83, p. 118-125 | Abstract: | A detailed conductive atomic force microscopic investigation is carried out to directly image the electron emission behavior for nitrogen-doped diamond nanorods (N-DNRs). Localized emission measurements illustrate uniform distribution of high-density electron emission sites from N-DNRs. Emission sites coupled to nano graphitic phases at the grain boundaries facilitate electron transport and thereby enhance field electron emission from N-DNRs, resulting in a device operation at low turn-on fields of 6.23 V/mu m, a high current density of 1.94 mA/cm(2) (at an applied field of 11.8 V/mu m) and a large field enhancement factor of 3320 with a long lifetime stability of 980 min. Moreover, using N-DNRs as cathodes, a microplasma device that can ignite a plasma at a low threshold field of 390 V/mm achieving a high plasma illumination current density of 3.95 mA/cm2 at an applied voltage of 550 V and a plasma life-time stability for a duration of 433 min was demonstrated. | Notes: | Roy, SS (reprint author), Shiv Nadar Univ, Sch Nat Sci, Dept Phys, NH-91, Gautam Buddha Nagar 201314, Uttar Pradesh, India. Haenen, K (reprint author), Hasselt Univ, Inst Mat Res IMO, Diepenbeek, Belgium. ken.haenen@uhasselt.be; susanta.roy@snu.edu.in | Keywords: | nitrogen-doped diamond nanorods; reactive ion etching; field electron emission; localized emission; plasma illumination | Document URI: | http://hdl.handle.net/1942/26329 | ISSN: | 0925-9635 | e-ISSN: | 1879-0062 | DOI: | 10.1016/j.diamond.2018.02.005 | ISI #: | 000430767200017 | Rights: | © 2018 Elsevier B.V. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
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