title: High-Performance Electron Field Emitters and Microplasma Cathodes Based on Conductive Hybrid Granular Structured Diamond Materials.
abstract: High-performance diamond electron field emitters (EFEs) with extremely low turn-on field (E0= 1.72 V/μm) and high current density (1.70 mA/cm2at an applied field of 3.86 V/μm) were successfully synthesized by using a modified two-step microwave plasma chemical deposition process. Such emitters possess EFE properties comparable with most of carbon- or semiconductor-based EFE materials, but with markedly better lifetime stability. The superb EFE behavior of these materials was achieved owing to the reduction in the diamond-to-Si interfacial resistance and the increase in the conductivity of the bulk diamond films (HBD-400 V) via the applications of high bias voltage during the preparation of the ultrananocrystalline diamond (UNCD) primary layer and the subsequent plasma post-treatment (PPT) process, respectively. The superior EFE properties along with enhanced robustness of HBD-400 Vfilms compared with the existing diamond-based EFE materials rendered these materials of greater potential for applications in high brightness display and multifunctional microplasma.
authors.affiliation: Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, ROC.
authors.forename: Adhimoorthy
authors.identifier: http://orcid.org/0000-0002-1982-1736
authors.initials: A
authors.lastname: Saravanan
authors.affiliation: Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, ROC.
authors.forename: Bohr-Ran
authors.initials: BR
authors.lastname: Huang
authors.affiliation: Department of Physics, Tamkang University , Tamsui 251, Taiwan, ROC.
authors.forename: Divinah
authors.initials: D
authors.lastname: Manoharan
authors.affiliation: Department of Physics, Tamkang University , Tamsui 251, Taiwan, ROC.
authors.forename: I-Nan
authors.initials: IN
authors.lastname: Lin
keywords: bias-enhanced plasma post-treatment process; hybrid granular structured diamond films; long-life UNCD films; nanographite; superior electron field emission properties