Red-emitting double perovskite phosphors Sr1−xCaxLaMgSbO6:Eu3+: Luminescence improvement based on composition modulation

Quan Liu; Lixi Wang; Wentao Huang; Xibing Li; Mingxun Yu; Qitu Zhang

doi:10.1016/j.ceramint.2017.08.216

Red-emitting double perovskite phosphors Sr_1−xCa_xLaMgSbO₆:Eu³⁺: Luminescence improvement based on composition modulation

Quan Liu, Lixi Wang, Wentao Huang, Xibing Li, Mingxun Yu, Qitu Zhang

College of Materials Science and Engineering

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

32 Scopus citations

Abstract

Crystal structures of Sr_1-xCa_xLaMgSbO₆:Eu³⁺ phosphors were studied in detail. Both the SrLaMgSbO₆ and the CaLaMgSbO₆ have a monoclinic (P2₁/n) structure. With increasing the Ca²⁺ concentration, the peaks gradually divided and the phase changed from SrLaMgSbO₆ to CaLaMgSbO₆. The symmetry of La³⁺ in SrLaMgSbO₆ is lower than that in CaLaMgSbO₆. Eu³⁺ ions, as the structural probes, were selected to study the structure. Lifetimes and intensity ratio were used to study the symmetry in the structure. Thermal quenching of the phosphors was discussed from 323 K to 473 K. The emission intensities of ⁵D₁→⁷F_J and ⁵D₀→⁷F_J damped in different ratios while increasing temperature. The configurational coordinate diagram was used to explain this interesting phenomenon.

Original language	English
Pages (from-to)	16292-16299
Number of pages	8
Journal	Ceramics International
Volume	43
Issue number	18
DOIs	https://doi.org/10.1016/j.ceramint.2017.08.216
State	Published - 15 Dec 2017

Keywords

Double perovskite
Structural evolution
Structural probes
Symmetry variation
Thermal quenching mechanism

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10.1016/j.ceramint.2017.08.216

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title = "Red-emitting double perovskite phosphors Sr1−xCaxLaMgSbO6:Eu3+: Luminescence improvement based on composition modulation",

abstract = "Crystal structures of Sr1-xCaxLaMgSbO6:Eu3+ phosphors were studied in detail. Both the SrLaMgSbO6 and the CaLaMgSbO6 have a monoclinic (P21/n) structure. With increasing the Ca2+ concentration, the peaks gradually divided and the phase changed from SrLaMgSbO6 to CaLaMgSbO6. The symmetry of La3+ in SrLaMgSbO6 is lower than that in CaLaMgSbO6. Eu3+ ions, as the structural probes, were selected to study the structure. Lifetimes and intensity ratio were used to study the symmetry in the structure. Thermal quenching of the phosphors was discussed from 323 K to 473 K. The emission intensities of 5D1→7FJ and 5D0→7FJ damped in different ratios while increasing temperature. The configurational coordinate diagram was used to explain this interesting phenomenon.",

keywords = "Double perovskite, Structural evolution, Structural probes, Symmetry variation, Thermal quenching mechanism",

author = "Quan Liu and Lixi Wang and Wentao Huang and Xibing Li and Mingxun Yu and Qitu Zhang",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and Techna Group S.r.l.",

year = "2017",

month = dec,

day = "15",

doi = "10.1016/j.ceramint.2017.08.216",

language = "英语",

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TY - JOUR

T1 - Red-emitting double perovskite phosphors Sr1−xCaxLaMgSbO6:Eu3+

T2 - Luminescence improvement based on composition modulation

AU - Liu, Quan

AU - Wang, Lixi

AU - Huang, Wentao

AU - Li, Xibing

AU - Yu, Mingxun

AU - Zhang, Qitu

PY - 2017/12/15

Y1 - 2017/12/15

N2 - Crystal structures of Sr1-xCaxLaMgSbO6:Eu3+ phosphors were studied in detail. Both the SrLaMgSbO6 and the CaLaMgSbO6 have a monoclinic (P21/n) structure. With increasing the Ca2+ concentration, the peaks gradually divided and the phase changed from SrLaMgSbO6 to CaLaMgSbO6. The symmetry of La3+ in SrLaMgSbO6 is lower than that in CaLaMgSbO6. Eu3+ ions, as the structural probes, were selected to study the structure. Lifetimes and intensity ratio were used to study the symmetry in the structure. Thermal quenching of the phosphors was discussed from 323 K to 473 K. The emission intensities of 5D1→7FJ and 5D0→7FJ damped in different ratios while increasing temperature. The configurational coordinate diagram was used to explain this interesting phenomenon.

AB - Crystal structures of Sr1-xCaxLaMgSbO6:Eu3+ phosphors were studied in detail. Both the SrLaMgSbO6 and the CaLaMgSbO6 have a monoclinic (P21/n) structure. With increasing the Ca2+ concentration, the peaks gradually divided and the phase changed from SrLaMgSbO6 to CaLaMgSbO6. The symmetry of La3+ in SrLaMgSbO6 is lower than that in CaLaMgSbO6. Eu3+ ions, as the structural probes, were selected to study the structure. Lifetimes and intensity ratio were used to study the symmetry in the structure. Thermal quenching of the phosphors was discussed from 323 K to 473 K. The emission intensities of 5D1→7FJ and 5D0→7FJ damped in different ratios while increasing temperature. The configurational coordinate diagram was used to explain this interesting phenomenon.

KW - Double perovskite

KW - Structural evolution

KW - Structural probes

KW - Symmetry variation

KW - Thermal quenching mechanism

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U2 - 10.1016/j.ceramint.2017.08.216

DO - 10.1016/j.ceramint.2017.08.216

M3 - 文章

AN - SCOPUS:85028709628

SN - 0272-8842

VL - 43

SP - 16292

EP - 16299

JO - Ceramics International

JF - Ceramics International

IS - 18

ER -

Red-emitting double perovskite phosphors Sr_1−xCa_xLaMgSbO₆:Eu³⁺: Luminescence improvement based on composition modulation

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