Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films

F. A.M. Köck; J. M. Garguilo; R. J. Nemanich; S. Gupta; B. R. Weiner; G. Morell

doi:10.1016/S0925-9635(02)00365-5

Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films

F. A.M. Köck, J. M. Garguilo, R. J. Nemanich, S. Gupta, B. R. Weiner, G. Morell

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We have investigated high sp² content intrinsic and sulfur doped nanocrystalline diamond films to study field emission properties by electron emission microscopy operated in different modes. Electron emission microscopy enables real time imaging of the electron emission from a surface with a lateral resolution of ∼15 nm. The nanocrystalline intrinsic diamond films exhibit electron emission at room temperature from localized emission sites with weak temperature dependence, and a density of ∼10³-10⁴/cm². In contrast, sulfur doped diamond films show similar emission characteristics at room temperature, but at elevated temperatures the emission significantly increases from the localized regions and a thermionic component is identified in the I / V dependence. We discuss the role of S-donor states to explain the enhanced emission of the S-doped nanocrystalline diamond.

Original language	English (US)
Pages (from-to)	474-480
Number of pages	7
Journal	Diamond and Related Materials
Volume	12
Issue number	3-7
DOIs	https://doi.org/10.1016/S0925-9635(02)00365-5
State	Published - Mar 2003
Externally published	Yes

Keywords

Field emission
Nanocrystalline
Plasma CVD

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Chemistry
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/S0925-9635(02)00365-5

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@article{148ec493b1a342b3a5103993cced66a6,

title = "Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films",

abstract = "We have investigated high sp2 content intrinsic and sulfur doped nanocrystalline diamond films to study field emission properties by electron emission microscopy operated in different modes. Electron emission microscopy enables real time imaging of the electron emission from a surface with a lateral resolution of ∼15 nm. The nanocrystalline intrinsic diamond films exhibit electron emission at room temperature from localized emission sites with weak temperature dependence, and a density of ∼103-104/cm2. In contrast, sulfur doped diamond films show similar emission characteristics at room temperature, but at elevated temperatures the emission significantly increases from the localized regions and a thermionic component is identified in the I / V dependence. We discuss the role of S-donor states to explain the enhanced emission of the S-doped nanocrystalline diamond.",

keywords = "Field emission, Nanocrystalline, Plasma CVD",

author = "K{\"o}ck, {F. A.M.} and Garguilo, {J. M.} and Nemanich, {R. J.} and S. Gupta and Weiner, {B. R.} and G. Morell",

note = "Funding Information: We gratefully acknowledge the Duke University Free Electron Laser Laboratory where all the Electron Emission Microscopy Experiments were performed. This research is supported through the Frontier Carbon Technology Project, the Japan Fine Ceramics Center, and PTS Company.",

year = "2003",

month = mar,

doi = "10.1016/S0925-9635(02)00365-5",

language = "English (US)",

volume = "12",

pages = "474--480",

journal = "Diamond and Related Materials",

issn = "0925-9635",

publisher = "Elsevier BV",

number = "3-7",

}

TY - JOUR

T1 - Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films

AU - Köck, F. A.M.

AU - Garguilo, J. M.

AU - Nemanich, R. J.

AU - Gupta, S.

AU - Weiner, B. R.

AU - Morell, G.

N1 - Funding Information: We gratefully acknowledge the Duke University Free Electron Laser Laboratory where all the Electron Emission Microscopy Experiments were performed. This research is supported through the Frontier Carbon Technology Project, the Japan Fine Ceramics Center, and PTS Company.

PY - 2003/3

Y1 - 2003/3

N2 - We have investigated high sp2 content intrinsic and sulfur doped nanocrystalline diamond films to study field emission properties by electron emission microscopy operated in different modes. Electron emission microscopy enables real time imaging of the electron emission from a surface with a lateral resolution of ∼15 nm. The nanocrystalline intrinsic diamond films exhibit electron emission at room temperature from localized emission sites with weak temperature dependence, and a density of ∼103-104/cm2. In contrast, sulfur doped diamond films show similar emission characteristics at room temperature, but at elevated temperatures the emission significantly increases from the localized regions and a thermionic component is identified in the I / V dependence. We discuss the role of S-donor states to explain the enhanced emission of the S-doped nanocrystalline diamond.

AB - We have investigated high sp2 content intrinsic and sulfur doped nanocrystalline diamond films to study field emission properties by electron emission microscopy operated in different modes. Electron emission microscopy enables real time imaging of the electron emission from a surface with a lateral resolution of ∼15 nm. The nanocrystalline intrinsic diamond films exhibit electron emission at room temperature from localized emission sites with weak temperature dependence, and a density of ∼103-104/cm2. In contrast, sulfur doped diamond films show similar emission characteristics at room temperature, but at elevated temperatures the emission significantly increases from the localized regions and a thermionic component is identified in the I / V dependence. We discuss the role of S-donor states to explain the enhanced emission of the S-doped nanocrystalline diamond.

KW - Field emission

KW - Nanocrystalline

KW - Plasma CVD

UR - http://www.scopus.com/inward/record.url?scp=18544401823&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18544401823&partnerID=8YFLogxK

U2 - 10.1016/S0925-9635(02)00365-5

DO - 10.1016/S0925-9635(02)00365-5

M3 - Article

AN - SCOPUS:18544401823

SN - 0925-9635

VL - 12

SP - 474

EP - 480

JO - Diamond and Related Materials

JF - Diamond and Related Materials

IS - 3-7

ER -

Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films

Abstract

Keywords

ASJC Scopus subject areas

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