Cross relaxation of Sm3+ and energy transfer between Sm3+ and Eu3+ Ions in (Ca0.97Sr0.03)3(VO4)2 phosphor host

Chung Hao Chiang; Han Yu Lin; Sheng Yuan Chu

doi:10.1111/jace.13335

Cross relaxation of Sm³⁺ and energy transfer between Sm³⁺ and Eu³⁺ Ions in (Ca_0.97Sr_0.03)₃(VO₄)₂ phosphor host

Chung Hao Chiang, Han Yu Lin, Sheng Yuan Chu

Department of Electrical Engineering

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

6 Citations (Scopus)

Abstract

An attempt was made to verify that the inhibition of Sm³⁺→Eu³⁺ energy transfer in (Ca_0.97Sr_0.03)_2.82(VO₄)₂:Sm³⁺,0.12Eu³⁺ phosphors at Sm³⁺ content levels of >0.06 mol can be ascribed to the cross-relaxation effect. The emission peak at around 951 nm attributed to the ⁶F_11/2→⁶H_5/2 transition of Sm³⁺, which should be barely detectable according to the energy-gap law, was observed in this work by exciting the ⁴K_11/2 state of Sm³ ⁺. The results indicate that cross-relaxation channels, which can depopulate the ⁴F_3/2 state of Sm³⁺, such as 1st Sm³⁺ (⁴F_3/2) + 2nd Sm³⁺ (⁶H_5/2)→1st Sm³⁺ (⁶F_11/2) + 2nd Sm³⁺ (⁶F_5/2) and 1st Sm³⁺ (⁴F_3/2) + 2nd Sm³⁺ (⁶H_5/2)→1st Sm³⁺ (⁶F_5/2) + 2nd Sm³⁺ (⁶F_11/2), may form and become efficient at an Sm³⁺ doping level of 0.06 mol. It was found that the 951-nm emission suffered from concentration quenching, which resulted from a dipole-dipole multipolar interaction.

Original language	English
Pages (from-to)	3737-3739
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	97
Issue number	12
DOIs	https://doi.org/10.1111/jace.13335
Publication status	Published - 2014 Dec

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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title = "Cross relaxation of Sm3+ and energy transfer between Sm3+ and Eu3+ Ions in (Ca0.97Sr0.03)3(VO4)2 phosphor host",

abstract = "An attempt was made to verify that the inhibition of Sm3+→Eu3+ energy transfer in (Ca0.97Sr0.03)2.82(VO4)2:Sm3+,0.12Eu3+ phosphors at Sm3+ content levels of >0.06 mol can be ascribed to the cross-relaxation effect. The emission peak at around 951 nm attributed to the 6F11/2→6H5/2 transition of Sm3+, which should be barely detectable according to the energy-gap law, was observed in this work by exciting the 4K11/2 state of Sm3 +. The results indicate that cross-relaxation channels, which can depopulate the 4F3/2 state of Sm3+, such as 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F11/2) + 2nd Sm3+ (6F5/2) and 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F5/2) + 2nd Sm3+ (6F11/2), may form and become efficient at an Sm3+ doping level of 0.06 mol. It was found that the 951-nm emission suffered from concentration quenching, which resulted from a dipole-dipole multipolar interaction.",

author = "Chiang, {Chung Hao} and Lin, {Han Yu} and Chu, {Sheng Yuan}",

note = "Publisher Copyright: {\textcopyright} 2014 The American Ceramic Society.",

year = "2014",

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doi = "10.1111/jace.13335",

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T1 - Cross relaxation of Sm3+ and energy transfer between Sm3+ and Eu3+ Ions in (Ca0.97Sr0.03)3(VO4)2 phosphor host

AU - Chiang, Chung Hao

AU - Lin, Han Yu

AU - Chu, Sheng Yuan

PY - 2014/12

Y1 - 2014/12

N2 - An attempt was made to verify that the inhibition of Sm3+→Eu3+ energy transfer in (Ca0.97Sr0.03)2.82(VO4)2:Sm3+,0.12Eu3+ phosphors at Sm3+ content levels of >0.06 mol can be ascribed to the cross-relaxation effect. The emission peak at around 951 nm attributed to the 6F11/2→6H5/2 transition of Sm3+, which should be barely detectable according to the energy-gap law, was observed in this work by exciting the 4K11/2 state of Sm3 +. The results indicate that cross-relaxation channels, which can depopulate the 4F3/2 state of Sm3+, such as 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F11/2) + 2nd Sm3+ (6F5/2) and 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F5/2) + 2nd Sm3+ (6F11/2), may form and become efficient at an Sm3+ doping level of 0.06 mol. It was found that the 951-nm emission suffered from concentration quenching, which resulted from a dipole-dipole multipolar interaction.

AB - An attempt was made to verify that the inhibition of Sm3+→Eu3+ energy transfer in (Ca0.97Sr0.03)2.82(VO4)2:Sm3+,0.12Eu3+ phosphors at Sm3+ content levels of >0.06 mol can be ascribed to the cross-relaxation effect. The emission peak at around 951 nm attributed to the 6F11/2→6H5/2 transition of Sm3+, which should be barely detectable according to the energy-gap law, was observed in this work by exciting the 4K11/2 state of Sm3 +. The results indicate that cross-relaxation channels, which can depopulate the 4F3/2 state of Sm3+, such as 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F11/2) + 2nd Sm3+ (6F5/2) and 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F5/2) + 2nd Sm3+ (6F11/2), may form and become efficient at an Sm3+ doping level of 0.06 mol. It was found that the 951-nm emission suffered from concentration quenching, which resulted from a dipole-dipole multipolar interaction.

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Cross relaxation of Sm³⁺ and energy transfer between Sm³⁺ and Eu³⁺ Ions in (Ca_0.97Sr_0.03)₃(VO₄)₂ phosphor host

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