Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/26543
Title: | Self-organized multi-layered graphene-boron-doped diamond hybrid nanowalls for high-performance electron emission devices | Authors: | KAMATCHI JOTHIRAMALINGAM, Sankaran Ficek, Mateusz Kunuku, Srinivasu Panda, Kalpataru Yeh, Chien-Jui Park, Jeong Young Sawczak, Miroslaw Michalowski, Pawel Piotr Leou, Keh-Chyang Bogdanowicz, Robert Lin, I-Nan HAENEN, Ken |
Issue Date: | 2018 | Source: | NANOSCALE, 10(3), p. 1345-1355 | Abstract: | Carbon nanomaterials such as nanotubes, nanoflakes/nanowalls, and graphene have been used as electron sources due to their superior field electron emission (FEE) characteristics. However, these materials show poor stability and short lifetimes, which prevent their use in practical device applications. The aim of this study was to find an innovative nanomaterial possessing both high robustness and reliable FEE behavior. Herein, a hybrid structure of self-organized multi-layered graphene (MLG)-boron doped diamond (BDD) nanowall materials with superior FEE characteristics was successfully synthesized using a microwave plasma enhanced chemical vapor deposition process. Transmission electron microscopy reveals that the as-prepared carbon clusters have a uniform, dense, and sharp nanowall morphology with sp(3) diamond cores encased by an sp(2) MLG shell. Detailed nanoscale investigations conducted using peak force-controlled tunneling atomic force microscopy show that each of the core-shell structured carbon cluster fields emits electrons equally well. The MLG-BDD nanowall materials show a low turn-on field of 2.4 V mu m(-1), a high emission current density of 4.2 mA cm(-2) at an applied field of 4.0 V mu m(-1), a large field enhancement factor of 4500, and prominently high lifetime stability (lasting for 700 min), which demonstrate the superiority of these materials over other hybrid nanostructured materials. The potential of these MLG-BDD hybrid nanowall materials in practical device applications was further illustrated by the plasma illumination behavior of a microplasma device with these materials as the cathode, where a low threshold voltage of 330 V (low threshold field of 330 V mm(-1)) and long plasma stability of 358 min were demonstrated. The fabrication of these hybrid nanowalls is straight forward and thereby opens up a pathway for the advancement of next-generation cathode materials for high brightness electron emission and micro-plasma-based display devices. | Notes: | Sankaran, KJ; Haenen, K (reprint author), Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. sankaran.kamatchi@uhasselt.be; ken.haenen@uhasselt.be | Document URI: | http://hdl.handle.net/1942/26543 | ISSN: | 2040-3364 | e-ISSN: | 2040-3372 | DOI: | 10.1039/c7nr06774g | ISI #: | 000423259000051 | Rights: | This journal is © The Royal Society of Chemistry 2018 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
sankaran 1.pdf Restricted Access | Published version | 3.37 MB | Adobe PDF | View/Open Request a copy |
sankaran2018.pdf | Peer-reviewed author version | 4.49 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
22
checked on Sep 2, 2020
WEB OF SCIENCETM
Citations
58
checked on Sep 13, 2024
Page view(s)
60
checked on Sep 7, 2022
Download(s)
330
checked on Sep 7, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.