Barrier heights of Au on diamond with different terminations determined by X-ray photoelectron spectroscopy

Fengnan Li; Jingwen Zhang; Xiaoliang Wang; Minghui Zhang; Hongxing Wang

doi:10.3390/coatings7070088

Barrier heights of Au on diamond with different terminations determined by X-ray photoelectron spectroscopy

Fengnan Li
, Jingwen Zhang
, Xiaoliang Wang
, Minghui Zhang
, Hongxing Wang

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University

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

14 Scopus citations

Abstract

Barrier heights of Au on hydrogen-/oxygen-/fluorine-/nitrogen-terminated diamond (H-/O-/F-/N-diamond) have been investigated by X-ray photoelectron spectroscopy. All of the H-/O-/F-/N-diamond surfaces have been formed on different areas of one diamond sample. An Au film with a thickness of 4 nm was evaporated to form Au/diamond contacts. Barrier height values for Au on H-/O-/F-/N-diamond contacts were determined to be -0.19, 1.71, 2.29, and 2.39 eV, respectively. Then, the surface of Au/diamond contacts was treated by 1000 eV Ar ⁺ bombardment with different duration of time, resulting in a pinned barrier height of 1.83 eV independent of contact structures. In the end, the spatial distribution of the energy band diagram has been calculated by solving Poisson's equation.

Original language	English
Article number	88
Journal	Coatings
Volume	7
Issue number	7
DOIs	https://doi.org/10.3390/coatings7070088
State	Published - 1 Jul 2017

Keywords

Diamond
Ion bombardment
Ohmic contact
Schottky barrier
Surface terminations
XPS

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10.3390/coatings7070088

Cite this

@article{37967355e8624c5a81b24265eddc5057,

title = "Barrier heights of Au on diamond with different terminations determined by X-ray photoelectron spectroscopy",

abstract = " Barrier heights of Au on hydrogen-/oxygen-/fluorine-/nitrogen-terminated diamond (H-/O-/F-/N-diamond) have been investigated by X-ray photoelectron spectroscopy. All of the H-/O-/F-/N-diamond surfaces have been formed on different areas of one diamond sample. An Au film with a thickness of 4 nm was evaporated to form Au/diamond contacts. Barrier height values for Au on H-/O-/F-/N-diamond contacts were determined to be -0.19, 1.71, 2.29, and 2.39 eV, respectively. Then, the surface of Au/diamond contacts was treated by 1000 eV Ar + bombardment with different duration of time, resulting in a pinned barrier height of 1.83 eV independent of contact structures. In the end, the spatial distribution of the energy band diagram has been calculated by solving Poisson's equation.",

keywords = "Diamond, Ion bombardment, Ohmic contact, Schottky barrier, Surface terminations, XPS",

author = "Fengnan Li and Jingwen Zhang and Xiaoliang Wang and Minghui Zhang and Hongxing Wang",

note = "Publisher Copyright: {\textcopyright} 2017 by the authors.",

year = "2017",

month = jul,

day = "1",

doi = "10.3390/coatings7070088",

language = "英语",

volume = "7",

journal = "Coatings",

issn = "2079-6412",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "7",

}

TY - JOUR

T1 - Barrier heights of Au on diamond with different terminations determined by X-ray photoelectron spectroscopy

AU - Li, Fengnan

AU - Zhang, Jingwen

AU - Wang, Xiaoliang

AU - Zhang, Minghui

AU - Wang, Hongxing

PY - 2017/7/1

Y1 - 2017/7/1

N2 - Barrier heights of Au on hydrogen-/oxygen-/fluorine-/nitrogen-terminated diamond (H-/O-/F-/N-diamond) have been investigated by X-ray photoelectron spectroscopy. All of the H-/O-/F-/N-diamond surfaces have been formed on different areas of one diamond sample. An Au film with a thickness of 4 nm was evaporated to form Au/diamond contacts. Barrier height values for Au on H-/O-/F-/N-diamond contacts were determined to be -0.19, 1.71, 2.29, and 2.39 eV, respectively. Then, the surface of Au/diamond contacts was treated by 1000 eV Ar + bombardment with different duration of time, resulting in a pinned barrier height of 1.83 eV independent of contact structures. In the end, the spatial distribution of the energy band diagram has been calculated by solving Poisson's equation.

AB - Barrier heights of Au on hydrogen-/oxygen-/fluorine-/nitrogen-terminated diamond (H-/O-/F-/N-diamond) have been investigated by X-ray photoelectron spectroscopy. All of the H-/O-/F-/N-diamond surfaces have been formed on different areas of one diamond sample. An Au film with a thickness of 4 nm was evaporated to form Au/diamond contacts. Barrier height values for Au on H-/O-/F-/N-diamond contacts were determined to be -0.19, 1.71, 2.29, and 2.39 eV, respectively. Then, the surface of Au/diamond contacts was treated by 1000 eV Ar + bombardment with different duration of time, resulting in a pinned barrier height of 1.83 eV independent of contact structures. In the end, the spatial distribution of the energy band diagram has been calculated by solving Poisson's equation.

KW - Diamond

KW - Ion bombardment

KW - Ohmic contact

KW - Schottky barrier

KW - Surface terminations

KW - XPS

UR - https://www.scopus.com/pages/publications/85054002680

U2 - 10.3390/coatings7070088

DO - 10.3390/coatings7070088

M3 - 文章

AN - SCOPUS:85054002680

SN - 2079-6412

VL - 7

JO - Coatings

JF - Coatings

IS - 7

M1 - 88

ER -

Barrier heights of Au on diamond with different terminations determined by X-ray photoelectron spectroscopy

Abstract

Keywords

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