Self-organized multi-layered graphene-boron-doped diamond hybrid nanowalls for high-performance electron emission devices

Cited 2 time in webofscience Cited 0 time in scopus
39 Viewed 0 Downloaded
Title
Self-organized multi-layered graphene-boron-doped diamond hybrid nanowalls for high-performance electron emission devices
Author(s)
Kamatchi Jothiramalingam Sankaran; Mateusz Ficek; Srinivasu Kunuku; Kalpataru Panda; Chien-Jui Yeh; Jeong Young Park; Miroslaw Sawczak; Michałowski P.P.; Keh-Chyang Leou; Robert Bogdanowicz; I-Nan Lin; Ken Haenen
Publication Date
2018-01
Journal
NANOSCALE, v.10, no.3, pp.1345 - 1355
Publisher
ROYAL SOC CHEMISTRY
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 sp3 diamond cores encased by an sp2 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 μm-1, a high emission current density of 4.2 mA cm-2 at an applied field of 4.0 V μm-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 microplasma-based display devices. © 2018 The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/4721
ISSN
2040-3364
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
Self-organized multi-layered graphene-boron-doped diamond hybrid nanowalls for high-performance electron emission devices.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse