Radiation Damage Effects on Optical, Electrical, and Thermophysical Properties of CVD Diamond Films

A. V. Khomich; R. A. Khmelnitskii; X. J. Hu; A. A. Khomich; A. F. Popovich; I. I. Vlasov; V. A. Dravin; Y. G.  Chen; A. E. Karkin; V. G. Ralchenko

doi:10.1007/s10812-013-9830-4

Radiation Damage Effects on Optical, Electrical, and Thermophysical Properties of CVD Diamond Films

A. V. Khomich^*, R. A. Khmelnitskii, X. J. Hu, A. A. Khomich, A. F. Popovich, I. I. Vlasov, V. A. Dravin, Y. G. Chen, A. E. Karkin, V. G. Ralchenko

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

Abstract

Raman and IR spectroscopy and thermal conductivity were employed to investigate the effects of simultaneous vacuum annealing on defect transformation processes in diamonds irradiated by fast neutrons and nanocrystalline diamond films (DF) implanted with O or P ions. A correlation between the thermal conductivity at room temperature and the absorption coefficient near 13 μm was found in diamonds irradiated by neutron fluence 2⋅10¹⁹ cm^–2. It was found that two-phonon absorption in diamond IR spectra was sensitive to destruction of long-range ordering in the diamond crystal lattice. An absorption band with a shape characteristic of localized centers in the band gap (activation energy ~0.25 eV) was identifi ed in IR spectra of DF irradiated by neutrons and annealed at temperatures <900°C. It was shown that the optical and transport properties of the studied radiation-damaged DF were determined by multi-vacancy complexes and inclusions of a non-diamond phase.

Original language	English
Pages (from-to)	707 - 714
Journal	Journal of Applied Spectroscopy
Volume	80
Issue number	5
Online published	11 Nov 2013
DOIs	https://doi.org/10.1007/s10812-013-9830-4
Publication status	Published - Nov 2013
Externally published	Yes

Research Keywords

synthetic diamond
neutron irradiation
ion implantation
optical properties
radiation defects
Raman spectra
thermal conductivity

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title = "Radiation Damage Effects on Optical, Electrical, and Thermophysical Properties of CVD Diamond Films",

abstract = "Raman and IR spectroscopy and thermal conductivity were employed to investigate the effects of simultaneous vacuum annealing on defect transformation processes in diamonds irradiated by fast neutrons and nanocrystalline diamond films (DF) implanted with O or P ions. A correlation between the thermal conductivity at room temperature and the absorption coefficient near 13 μm was found in diamonds irradiated by neutron fluence 2⋅1019 cm–2. It was found that two-phonon absorption in diamond IR spectra was sensitive to destruction of long-range ordering in the diamond crystal lattice. An absorption band with a shape characteristic of localized centers in the band gap (activation energy ~0.25 eV) was identifi ed in IR spectra of DF irradiated by neutrons and annealed at temperatures <900°C. It was shown that the optical and transport properties of the studied radiation-damaged DF were determined by multi-vacancy complexes and inclusions of a non-diamond phase.",

keywords = "synthetic diamond, neutron irradiation, ion implantation, optical properties, radiation defects, Raman spectra, thermal conductivity",

author = "Khomich, {A. V.} and Khmelnitskii, {R. A.} and Hu, {X. J.} and Khomich, {A. A.} and Popovich, {A. F.} and Vlasov, {I. I.} and Dravin, {V. A.} and Chen, {Y. G.} and Karkin, {A. E.} and Ralchenko, {V. G.}",

year = "2013",

month = nov,

doi = "10.1007/s10812-013-9830-4",

language = "English",

volume = "80",

pages = "707 -- 714",

journal = "Journal of Applied Spectroscopy",

issn = "0021-9037",

publisher = "Springer GmbH & Co, Auslieferungs-Gesellschaf",

number = "5",

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TY - JOUR

T1 - Radiation Damage Effects on Optical, Electrical, and Thermophysical Properties of CVD Diamond Films

AU - Khomich, A. V.

AU - Khmelnitskii, R. A.

AU - Hu, X. J.

AU - Khomich, A. A.

AU - Popovich, A. F.

AU - Vlasov, I. I.

AU - Dravin, V. A.

AU - Chen, Y. G.

AU - Karkin, A. E.

AU - Ralchenko, V. G.

PY - 2013/11

Y1 - 2013/11

N2 - Raman and IR spectroscopy and thermal conductivity were employed to investigate the effects of simultaneous vacuum annealing on defect transformation processes in diamonds irradiated by fast neutrons and nanocrystalline diamond films (DF) implanted with O or P ions. A correlation between the thermal conductivity at room temperature and the absorption coefficient near 13 μm was found in diamonds irradiated by neutron fluence 2⋅1019 cm–2. It was found that two-phonon absorption in diamond IR spectra was sensitive to destruction of long-range ordering in the diamond crystal lattice. An absorption band with a shape characteristic of localized centers in the band gap (activation energy ~0.25 eV) was identifi ed in IR spectra of DF irradiated by neutrons and annealed at temperatures <900°C. It was shown that the optical and transport properties of the studied radiation-damaged DF were determined by multi-vacancy complexes and inclusions of a non-diamond phase.

AB - Raman and IR spectroscopy and thermal conductivity were employed to investigate the effects of simultaneous vacuum annealing on defect transformation processes in diamonds irradiated by fast neutrons and nanocrystalline diamond films (DF) implanted with O or P ions. A correlation between the thermal conductivity at room temperature and the absorption coefficient near 13 μm was found in diamonds irradiated by neutron fluence 2⋅1019 cm–2. It was found that two-phonon absorption in diamond IR spectra was sensitive to destruction of long-range ordering in the diamond crystal lattice. An absorption band with a shape characteristic of localized centers in the band gap (activation energy ~0.25 eV) was identifi ed in IR spectra of DF irradiated by neutrons and annealed at temperatures <900°C. It was shown that the optical and transport properties of the studied radiation-damaged DF were determined by multi-vacancy complexes and inclusions of a non-diamond phase.

KW - synthetic diamond

KW - neutron irradiation

KW - ion implantation

KW - optical properties

KW - radiation defects

KW - Raman spectra

KW - thermal conductivity

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U2 - 10.1007/s10812-013-9830-4

DO - 10.1007/s10812-013-9830-4

M3 - RGC 21 - Publication in refereed journal

SN - 0021-9037

VL - 80

SP - 707

EP - 714

JO - Journal of Applied Spectroscopy

JF - Journal of Applied Spectroscopy

IS - 5

ER -

Radiation Damage Effects on Optical, Electrical, and Thermophysical Properties of CVD Diamond Films

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Research Keywords

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