Time-resolved photoluminescence spectroscopy of Ce:Gd3Al 2Ga3O12 crystals

Azusa Satoh; Mamoru Kitaura; Kei Kamada; Akimasa Ohnishi; Minoru Sasaki; Kazuhiko Hara

doi:10.7567/JJAP.53.05FK01

Time-resolved photoluminescence spectroscopy of Ce:Gd₃Al ₂Ga₃O₁₂ crystals

Azusa Satoh, Mamoru Kitaura, Kei Kamada, Akimasa Ohnishi, Minoru Sasaki, Kazuhiko Hara

New Industry Creation Hatchery Center (NICHe)

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

9 Citations (Scopus)

Abstract

Time-resolved photoluminescence (PL) spectra of Ce-doped Gd ₃Al₂Ga₃O₁₂ (Ce:GAGG) crystal have been measured at various temperatures under Ce³⁺ 4f G 5d excitation. All time-resolved PL spectra show only a Ce³⁺ 5d G 4f band around 2.3 eV. Decay curves of this band consist of a fast and slow components. The temperature dependence of integrated intensities of the fast and slow components are analyzed by considering nonradiative processes starting from the ground level of an electron trap. From the results of analysis, we discuss relaxation processes of 5d electrons created under Ce³⁺ 4f G 5d excitation.

Original language	English
Article number	05FK01
Journal	Japanese journal of applied physics
Volume	53
Issue number	5 SPEC. ISSUE 1
DOIs	https://doi.org/10.7567/JJAP.53.05FK01
Publication status	Published - 2014 May

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Time-resolved photoluminescence spectroscopy of Ce:Gd3Al 2Ga3O12 crystals",

abstract = "Time-resolved photoluminescence (PL) spectra of Ce-doped Gd 3Al2Ga3O12 (Ce:GAGG) crystal have been measured at various temperatures under Ce3+ 4f G 5d excitation. All time-resolved PL spectra show only a Ce3+ 5d G 4f band around 2.3 eV. Decay curves of this band consist of a fast and slow components. The temperature dependence of integrated intensities of the fast and slow components are analyzed by considering nonradiative processes starting from the ground level of an electron trap. From the results of analysis, we discuss relaxation processes of 5d electrons created under Ce3+ 4f G 5d excitation.",

author = "Azusa Satoh and Mamoru Kitaura and Kei Kamada and Akimasa Ohnishi and Minoru Sasaki and Kazuhiko Hara",

year = "2014",

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T1 - Time-resolved photoluminescence spectroscopy of Ce:Gd3Al 2Ga3O12 crystals

AU - Satoh, Azusa

AU - Kitaura, Mamoru

AU - Kamada, Kei

AU - Ohnishi, Akimasa

AU - Sasaki, Minoru

AU - Hara, Kazuhiko

PY - 2014/5

Y1 - 2014/5

N2 - Time-resolved photoluminescence (PL) spectra of Ce-doped Gd 3Al2Ga3O12 (Ce:GAGG) crystal have been measured at various temperatures under Ce3+ 4f G 5d excitation. All time-resolved PL spectra show only a Ce3+ 5d G 4f band around 2.3 eV. Decay curves of this band consist of a fast and slow components. The temperature dependence of integrated intensities of the fast and slow components are analyzed by considering nonradiative processes starting from the ground level of an electron trap. From the results of analysis, we discuss relaxation processes of 5d electrons created under Ce3+ 4f G 5d excitation.

AB - Time-resolved photoluminescence (PL) spectra of Ce-doped Gd 3Al2Ga3O12 (Ce:GAGG) crystal have been measured at various temperatures under Ce3+ 4f G 5d excitation. All time-resolved PL spectra show only a Ce3+ 5d G 4f band around 2.3 eV. Decay curves of this band consist of a fast and slow components. The temperature dependence of integrated intensities of the fast and slow components are analyzed by considering nonradiative processes starting from the ground level of an electron trap. From the results of analysis, we discuss relaxation processes of 5d electrons created under Ce3+ 4f G 5d excitation.

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