Quenching of thermo-stimulated photo-ionization by energy transfer in CaAl4O7: Tb3+, Ce3+

D. Jia; W. Jia; X. J. Wang; W. M. Yen

doi:10.1016/j.ssc.2003.07.009

Quenching of thermo-stimulated photo-ionization by energy transfer in CaAl₄O₇: Tb³⁺, Ce³⁺

D. Jia, W. Jia, X. J. Wang, W. M. Yen

Biochemistry, Chemistry, & Physics

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

17 Scopus citations

Abstract

Crystal fibers of Ce³⁺ and Tb³⁺ singly doped and co-doped CaAl₄O₇ were grown by the LHPG method. Photoluminescence, excitation spectra and photoconduction were measured. Thermo-stimulated photo-ionization (delocalization) of electrons from the lowest field component of the 5d excited state of Ce³⁺ was observed in the Ce³⁺ singly doped sample under excitation at 355 nm. The 5d sublevel was found to locate at 0.3eV below the conduction band of the host. However, the thermo-stimulated photo-ionization was greatly quenched due to the fast energy transfer from the 5d sublevel to Tb³⁺ ions in the Ce ³⁺/Tb³⁺ double doped sample.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Solid State Communications
Volume	129
Issue number	1
DOIs	https://doi.org/10.1016/j.ssc.2003.07.009
State	Published - Jan 2004

Keywords

D. Energy transfer
D. Optical properties
D. Photoconductivity
E. Photoluminescence

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10.1016/j.ssc.2003.07.009

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title = "Quenching of thermo-stimulated photo-ionization by energy transfer in CaAl4O7: Tb3+, Ce3+",

abstract = "Crystal fibers of Ce3+ and Tb3+ singly doped and co-doped CaAl4O7 were grown by the LHPG method. Photoluminescence, excitation spectra and photoconduction were measured. Thermo-stimulated photo-ionization (delocalization) of electrons from the lowest field component of the 5d excited state of Ce3+ was observed in the Ce3+ singly doped sample under excitation at 355 nm. The 5d sublevel was found to locate at 0.3eV below the conduction band of the host. However, the thermo-stimulated photo-ionization was greatly quenched due to the fast energy transfer from the 5d sublevel to Tb3+ ions in the Ce 3+/Tb3+ double doped sample.",

keywords = "D. Energy transfer, D. Optical properties, D. Photoconductivity, E. Photoluminescence",

author = "D. Jia and W. Jia and Wang, {X. J.} and Yen, {W. M.}",

year = "2004",

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doi = "10.1016/j.ssc.2003.07.009",

language = "English",

volume = "129",

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TY - JOUR

T1 - Quenching of thermo-stimulated photo-ionization by energy transfer in CaAl4O7

T2 - Tb3+, Ce3+

AU - Jia, D.

AU - Jia, W.

AU - Wang, X. J.

AU - Yen, W. M.

PY - 2004/1

Y1 - 2004/1

N2 - Crystal fibers of Ce3+ and Tb3+ singly doped and co-doped CaAl4O7 were grown by the LHPG method. Photoluminescence, excitation spectra and photoconduction were measured. Thermo-stimulated photo-ionization (delocalization) of electrons from the lowest field component of the 5d excited state of Ce3+ was observed in the Ce3+ singly doped sample under excitation at 355 nm. The 5d sublevel was found to locate at 0.3eV below the conduction band of the host. However, the thermo-stimulated photo-ionization was greatly quenched due to the fast energy transfer from the 5d sublevel to Tb3+ ions in the Ce 3+/Tb3+ double doped sample.

AB - Crystal fibers of Ce3+ and Tb3+ singly doped and co-doped CaAl4O7 were grown by the LHPG method. Photoluminescence, excitation spectra and photoconduction were measured. Thermo-stimulated photo-ionization (delocalization) of electrons from the lowest field component of the 5d excited state of Ce3+ was observed in the Ce3+ singly doped sample under excitation at 355 nm. The 5d sublevel was found to locate at 0.3eV below the conduction band of the host. However, the thermo-stimulated photo-ionization was greatly quenched due to the fast energy transfer from the 5d sublevel to Tb3+ ions in the Ce 3+/Tb3+ double doped sample.

KW - D. Energy transfer

KW - D. Optical properties

KW - D. Photoconductivity

KW - E. Photoluminescence

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U2 - 10.1016/j.ssc.2003.07.009

DO - 10.1016/j.ssc.2003.07.009

M3 - Article

AN - SCOPUS:0242709468

SN - 0038-1098

VL - 129

SP - 1

EP - 4

JO - Solid State Communications

JF - Solid State Communications

IS - 1

ER -

Quenching of thermo-stimulated photo-ionization by energy transfer in CaAl₄O₇: Tb³⁺, Ce³⁺

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Keywords

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