Annealing effects of morphology and luminescence properties of pulsed laser-deposited SrAl2O4: Eu, Dy thin films on sapphire (0001) surfaces

Zhi Jun Zhang; Seunghwan Kim; Youngsin Park; Woochul Yang

doi:10.1016/j.tsf.2017.09.042

Annealing effects of morphology and luminescence properties of pulsed laser-deposited SrAl₂O₄: Eu, Dy thin films on sapphire (0001) surfaces

Zhi Jun Zhang, Seunghwan Kim, Youngsin Park, Woochul Yang

Department of Physics

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

1 Scopus citations

Abstract

The current work reports on the effect of annealing temperatures on the morphology and photoluminescence properties of SrAl₂O₄: Eu, Dy thin films on sapphire (0001) substrates fabricated by pulsed laser deposition technique. Scanning electronic microscopy and atomic force microscopy were used to investigate the thickness, surface topography, and the morphology of the films. The film deposited using a higher annealing temperature was packed with a uniform layer of larger particle size grains. In addition, the surface of this film was shown to be relatively rougher than that without annealing treatment. An intense green emission, which is attributed to the 5d-4f transition of Eu^{2 +} was observed at about 520 nm from the films with annealing treatment. The effects of annealing treatment on the morphology, topography, and photoluminescence properties are discussed in detail.

Original language	English
Pages (from-to)	290-294
Number of pages	5
Journal	Thin Solid Films
Volume	642
DOIs	https://doi.org/10.1016/j.tsf.2017.09.042
State	Published - 30 Nov 2017

Keywords

Luminescence
Pulsed laser deposition
Strontium aluminate
Thin films

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10.1016/j.tsf.2017.09.042

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title = "Annealing effects of morphology and luminescence properties of pulsed laser-deposited SrAl2O4: Eu, Dy thin films on sapphire (0001) surfaces",

abstract = "The current work reports on the effect of annealing temperatures on the morphology and photoluminescence properties of SrAl2O4: Eu, Dy thin films on sapphire (0001) substrates fabricated by pulsed laser deposition technique. Scanning electronic microscopy and atomic force microscopy were used to investigate the thickness, surface topography, and the morphology of the films. The film deposited using a higher annealing temperature was packed with a uniform layer of larger particle size grains. In addition, the surface of this film was shown to be relatively rougher than that without annealing treatment. An intense green emission, which is attributed to the 5d-4f transition of Eu2 + was observed at about 520 nm from the films with annealing treatment. The effects of annealing treatment on the morphology, topography, and photoluminescence properties are discussed in detail.",

keywords = "Luminescence, Pulsed laser deposition, Strontium aluminate, Thin films",

author = "Zhang, {Zhi Jun} and Seunghwan Kim and Youngsin Park and Woochul Yang",

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doi = "10.1016/j.tsf.2017.09.042",

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T1 - Annealing effects of morphology and luminescence properties of pulsed laser-deposited SrAl2O4

T2 - Eu, Dy thin films on sapphire (0001) surfaces

AU - Zhang, Zhi Jun

AU - Kim, Seunghwan

AU - Park, Youngsin

AU - Yang, Woochul

PY - 2017/11/30

Y1 - 2017/11/30

N2 - The current work reports on the effect of annealing temperatures on the morphology and photoluminescence properties of SrAl2O4: Eu, Dy thin films on sapphire (0001) substrates fabricated by pulsed laser deposition technique. Scanning electronic microscopy and atomic force microscopy were used to investigate the thickness, surface topography, and the morphology of the films. The film deposited using a higher annealing temperature was packed with a uniform layer of larger particle size grains. In addition, the surface of this film was shown to be relatively rougher than that without annealing treatment. An intense green emission, which is attributed to the 5d-4f transition of Eu2 + was observed at about 520 nm from the films with annealing treatment. The effects of annealing treatment on the morphology, topography, and photoluminescence properties are discussed in detail.

AB - The current work reports on the effect of annealing temperatures on the morphology and photoluminescence properties of SrAl2O4: Eu, Dy thin films on sapphire (0001) substrates fabricated by pulsed laser deposition technique. Scanning electronic microscopy and atomic force microscopy were used to investigate the thickness, surface topography, and the morphology of the films. The film deposited using a higher annealing temperature was packed with a uniform layer of larger particle size grains. In addition, the surface of this film was shown to be relatively rougher than that without annealing treatment. An intense green emission, which is attributed to the 5d-4f transition of Eu2 + was observed at about 520 nm from the films with annealing treatment. The effects of annealing treatment on the morphology, topography, and photoluminescence properties are discussed in detail.

KW - Luminescence

KW - Pulsed laser deposition

KW - Strontium aluminate

KW - Thin films

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Annealing effects of morphology and luminescence properties of pulsed laser-deposited SrAl₂O₄: Eu, Dy thin films on sapphire (0001) surfaces

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Keywords

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