Structural evolution induced preferential occupancy of designated cation sites by Eu2+ in M5(Si3O9)2 (M = Sr, Ba, Y, Mn) phosphors

Yi Wei; Chun Che Lin; Zewei Quan; Maxim S. Molokeev; Victor V. Atuchin; Ting Shan Chan; Yujun Liang; Jun Lin; Guogang Li

doi:10.1039/c6ra11681g

Structural evolution induced preferential occupancy of designated cation sites by Eu²⁺ in M₅(Si₃O₉)₂ (M = Sr, Ba, Y, Mn) phosphors

Yi Wei, Chun Che Lin, Zewei Quan, Maxim S. Molokeev, Victor V. Atuchin, Ting Shan Chan, Yujun Liang, Jun Lin, Guogang Li

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

77 Citations (Scopus)

Abstract

In this paper, we present new insight into a changing Eu²⁺ crystallographic site preference in Eu-doped M₅(Si₃O₉)₂ (M = Sr, Ba, Y, Mn), which is related to the structural variation induced by M cation substitutions. The effect of the local structural geometry on the luminescence properties of Eu²⁺ is revealed. By substitution of Ba²⁺ for Sr²⁺, the lattice expansion is restricted to specific cation sites, resulting in the abrupt blue shifted emission of Eu²⁺ ions. The abnormal blue shift on replacing Sr²⁺ with Mn²⁺ is attributed to the preferential 6-fold coordination for Mn²⁺ that moves the Eu²⁺ ions to other sites. The results elucidate the mechanisms of emission band adjustment by local site coordination change and it can be potentially extended to crystals which properties are sensitive to local lattice variations.

Original language	English
Pages (from-to)	57261-57265
Number of pages	5
Journal	RSC Advances
Volume	6
Issue number	62
DOIs	https://doi.org/10.1039/c6ra11681g
Publication status	Published - Jan 1 2016
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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title = "Structural evolution induced preferential occupancy of designated cation sites by Eu2+ in M5(Si3O9)2 (M = Sr, Ba, Y, Mn) phosphors",

abstract = "In this paper, we present new insight into a changing Eu2+ crystallographic site preference in Eu-doped M5(Si3O9)2 (M = Sr, Ba, Y, Mn), which is related to the structural variation induced by M cation substitutions. The effect of the local structural geometry on the luminescence properties of Eu2+ is revealed. By substitution of Ba2+ for Sr2+, the lattice expansion is restricted to specific cation sites, resulting in the abrupt blue shifted emission of Eu2+ ions. The abnormal blue shift on replacing Sr2+ with Mn2+ is attributed to the preferential 6-fold coordination for Mn2+ that moves the Eu2+ ions to other sites. The results elucidate the mechanisms of emission band adjustment by local site coordination change and it can be potentially extended to crystals which properties are sensitive to local lattice variations.",

author = "Yi Wei and Lin, {Chun Che} and Zewei Quan and Molokeev, {Maxim S.} and Atuchin, {Victor V.} and Chan, {Ting Shan} and Yujun Liang and Jun Lin and Guogang Li",

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doi = "10.1039/c6ra11681g",

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T1 - Structural evolution induced preferential occupancy of designated cation sites by Eu2+ in M5(Si3O9)2 (M = Sr, Ba, Y, Mn) phosphors

AU - Wei, Yi

AU - Lin, Chun Che

AU - Quan, Zewei

AU - Molokeev, Maxim S.

AU - Atuchin, Victor V.

AU - Chan, Ting Shan

AU - Liang, Yujun

AU - Lin, Jun

AU - Li, Guogang

PY - 2016/1/1

Y1 - 2016/1/1

N2 - In this paper, we present new insight into a changing Eu2+ crystallographic site preference in Eu-doped M5(Si3O9)2 (M = Sr, Ba, Y, Mn), which is related to the structural variation induced by M cation substitutions. The effect of the local structural geometry on the luminescence properties of Eu2+ is revealed. By substitution of Ba2+ for Sr2+, the lattice expansion is restricted to specific cation sites, resulting in the abrupt blue shifted emission of Eu2+ ions. The abnormal blue shift on replacing Sr2+ with Mn2+ is attributed to the preferential 6-fold coordination for Mn2+ that moves the Eu2+ ions to other sites. The results elucidate the mechanisms of emission band adjustment by local site coordination change and it can be potentially extended to crystals which properties are sensitive to local lattice variations.

AB - In this paper, we present new insight into a changing Eu2+ crystallographic site preference in Eu-doped M5(Si3O9)2 (M = Sr, Ba, Y, Mn), which is related to the structural variation induced by M cation substitutions. The effect of the local structural geometry on the luminescence properties of Eu2+ is revealed. By substitution of Ba2+ for Sr2+, the lattice expansion is restricted to specific cation sites, resulting in the abrupt blue shifted emission of Eu2+ ions. The abnormal blue shift on replacing Sr2+ with Mn2+ is attributed to the preferential 6-fold coordination for Mn2+ that moves the Eu2+ ions to other sites. The results elucidate the mechanisms of emission band adjustment by local site coordination change and it can be potentially extended to crystals which properties are sensitive to local lattice variations.

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Structural evolution induced preferential occupancy of designated cation sites by Eu²⁺ in M₅(Si₃O₉)₂ (M = Sr, Ba, Y, Mn) phosphors

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