Charged defects and defect-induced processes in nitrogen films

Elena Savchenko; Ivan Khyzhniy; Sergey Uyutnov; Andrey Barabashov; Galina Gumenchuk; Alexey Ponomaryov; Vladimir Bondybey

doi:10.1002/pssc.201400166

Charged defects and defect-induced processes in nitrogen films

Elena Savchenko, Ivan Khyzhniy, Sergey Uyutnov, Andrey Barabashov, Galina Gumenchuk, Alexey Ponomaryov, Vladimir Bondybey

Chair of Physical Chemistry

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

19 Scopus citations

Abstract

Radiation effects in solid nitrogen irradiated with an electron beam were studied with emphasis on the role of charged centers in radiation-induced phenomena. The experiments were performed employing luminescence method and activation spectroscopy techniques - spectrally resolved thermally stimulated luminescence TSL and thermally stimulated exoelectron emission. Samples were probed in depth by varying electron energy, thus discriminating radiation-induced processes in the bulk and at the surface. Spectroscopic evidence of the excited N₂^* (C³Π_u) molecule desorption was obtained for the first time and mechanism of the phenomenon based on recombination of electron with intrinsic charged center N₄⁺ was proposed. The key role of N₃⁺ center dissociative recombination in generation of N radicals is suggested.

Original language	English
Pages (from-to)	49-54
Number of pages	6
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	12
Issue number	1-2
DOIs	https://doi.org/10.1002/pssc.201400166
State	Published - 1 Jan 2015

Keywords

Electronic desorption
Nitrogen cations
Radiation effects

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10.1002/pssc.201400166

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abstract = "Radiation effects in solid nitrogen irradiated with an electron beam were studied with emphasis on the role of charged centers in radiation-induced phenomena. The experiments were performed employing luminescence method and activation spectroscopy techniques - spectrally resolved thermally stimulated luminescence TSL and thermally stimulated exoelectron emission. Samples were probed in depth by varying electron energy, thus discriminating radiation-induced processes in the bulk and at the surface. Spectroscopic evidence of the excited N2* (C3Πu) molecule desorption was obtained for the first time and mechanism of the phenomenon based on recombination of electron with intrinsic charged center N4+ was proposed. The key role of N3+ center dissociative recombination in generation of N radicals is suggested.",

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T1 - Charged defects and defect-induced processes in nitrogen films

AU - Savchenko, Elena

AU - Khyzhniy, Ivan

AU - Uyutnov, Sergey

AU - Barabashov, Andrey

AU - Gumenchuk, Galina

AU - Ponomaryov, Alexey

AU - Bondybey, Vladimir

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Radiation effects in solid nitrogen irradiated with an electron beam were studied with emphasis on the role of charged centers in radiation-induced phenomena. The experiments were performed employing luminescence method and activation spectroscopy techniques - spectrally resolved thermally stimulated luminescence TSL and thermally stimulated exoelectron emission. Samples were probed in depth by varying electron energy, thus discriminating radiation-induced processes in the bulk and at the surface. Spectroscopic evidence of the excited N2* (C3Πu) molecule desorption was obtained for the first time and mechanism of the phenomenon based on recombination of electron with intrinsic charged center N4+ was proposed. The key role of N3+ center dissociative recombination in generation of N radicals is suggested.

AB - Radiation effects in solid nitrogen irradiated with an electron beam were studied with emphasis on the role of charged centers in radiation-induced phenomena. The experiments were performed employing luminescence method and activation spectroscopy techniques - spectrally resolved thermally stimulated luminescence TSL and thermally stimulated exoelectron emission. Samples were probed in depth by varying electron energy, thus discriminating radiation-induced processes in the bulk and at the surface. Spectroscopic evidence of the excited N2* (C3Πu) molecule desorption was obtained for the first time and mechanism of the phenomenon based on recombination of electron with intrinsic charged center N4+ was proposed. The key role of N3+ center dissociative recombination in generation of N radicals is suggested.

KW - Electronic desorption

KW - Nitrogen cations

KW - Radiation effects

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Charged defects and defect-induced processes in nitrogen films

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