Room temperature cathodoluminescence quenching of Er3+ in AlNOEr

V. Brien, P.R. Edwards, P. Boulet, K.P. O'Donnell

Research output: Contribution to journalArticle

Abstract

This paper reports a cathodoluminescence (CL) spectroscopic study of nanogranular AlNOErx samples with erbium content, x, in the range 0.5–3.6 atomic %. A wide range of erbium concentration was studied with the aim of understanding the concentration quenching of CL. The composition of thin films, deposited by radiofrequency reactive magnetron sputtering, was accurately determined by Energy Dispersive X-ray Spectroscopy (EDS). CL emission was investigated in the extended visible spectral range from 350 nm to 850 nm. The critical concentration of luminescent activator Er3+ above which CL quenching occurs is 1%; the corresponding critical distance between Er3+ ions in AlNOErx is about 1.0 nm. The quenching mechanism is discussed. We discount an exchange-mediated interaction in favour of a multipole-multipole phonon-assisted interaction.
LanguageEnglish
Pages97-101
Number of pages5
JournalJournal of Luminescence
Volume205
Early online date5 Sep 2018
DOIs
StateE-pub ahead of print - 5 Sep 2018

Fingerprint

Erbium
Cathodoluminescence
cathodoluminescence
Quenching
Phonons
quenching
X-Ray Emission Spectrometry
Temperature
room temperature
erbium
multipoles
Ions
Reactive sputtering
Exchange interactions
Magnetron sputtering
Energy dispersive spectroscopy
magnetron sputtering
interactions
Thin films
thin films

Keywords

  • aluminium nitrade
  • cathodoluminescence
  • rare earth
  • quenching
  • R. F. sputtering

Cite this

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title = "Room temperature cathodoluminescence quenching of Er3+ in AlNOEr",
abstract = "This paper reports a cathodoluminescence (CL) spectroscopic study of nanogranular AlNOErx samples with erbium content, x, in the range 0.5–3.6 atomic {\%}. A wide range of erbium concentration was studied with the aim of understanding the concentration quenching of CL. The composition of thin films, deposited by radiofrequency reactive magnetron sputtering, was accurately determined by Energy Dispersive X-ray Spectroscopy (EDS). CL emission was investigated in the extended visible spectral range from 350 nm to 850 nm. The critical concentration of luminescent activator Er3+ above which CL quenching occurs is 1{\%}; the corresponding critical distance between Er3+ ions in AlNOErx is about 1.0 nm. The quenching mechanism is discussed. We discount an exchange-mediated interaction in favour of a multipole-multipole phonon-assisted interaction.",
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author = "V. Brien and P.R. Edwards and P. Boulet and K.P. O'Donnell",
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Room temperature cathodoluminescence quenching of Er3+ in AlNOEr. / Brien, V.; Edwards, P.R.; Boulet, P.; O'Donnell, K.P.

In: Journal of Luminescence, Vol. 205, 31.01.2019, p. 97-101.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Room temperature cathodoluminescence quenching of Er3+ in AlNOEr

AU - Brien,V.

AU - Edwards,P.R.

AU - Boulet,P.

AU - O'Donnell,K.P.

PY - 2018/9/5

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AB - This paper reports a cathodoluminescence (CL) spectroscopic study of nanogranular AlNOErx samples with erbium content, x, in the range 0.5–3.6 atomic %. A wide range of erbium concentration was studied with the aim of understanding the concentration quenching of CL. The composition of thin films, deposited by radiofrequency reactive magnetron sputtering, was accurately determined by Energy Dispersive X-ray Spectroscopy (EDS). CL emission was investigated in the extended visible spectral range from 350 nm to 850 nm. The critical concentration of luminescent activator Er3+ above which CL quenching occurs is 1%; the corresponding critical distance between Er3+ ions in AlNOErx is about 1.0 nm. The quenching mechanism is discussed. We discount an exchange-mediated interaction in favour of a multipole-multipole phonon-assisted interaction.

KW - aluminium nitrade

KW - cathodoluminescence

KW - rare earth

KW - quenching

KW - R. F. sputtering

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