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 journalArticle

38 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 languageEnglish
Pages (from-to)57261-57265
Number of pages5
JournalRSC Advances
Volume6
Issue number62
DOIs
Publication statusPublished - Jan 1 2016
Externally publishedYes

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Phosphors
Cations
Substitution reactions
Positive ions
Ions
Crystal lattices
Luminescence
Crystals
Geometry

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Structural evolution induced preferential occupancy of designated cation sites by Eu2+ in M5(Si3O9)2 (M = Sr, Ba, Y, Mn) phosphors. / Wei, Yi; Lin, Chun Che; Quan, Zewei; Molokeev, Maxim S.; Atuchin, Victor V.; Chan, Ting Shan; Liang, Yujun; Lin, Jun; Li, Guogang.

In: RSC Advances, Vol. 6, No. 62, 01.01.2016, p. 57261-57265.

Research output: Contribution to journalArticle

Wei, Y, Lin, CC, Quan, Z, Molokeev, MS, Atuchin, VV, Chan, TS, Liang, Y, Lin, J & Li, G 2016, 'Structural evolution induced preferential occupancy of designated cation sites by Eu2+ in M5(Si3O9)2 (M = Sr, Ba, Y, Mn) phosphors', RSC Advances, vol. 6, no. 62, pp. 57261-57265. https://doi.org/10.1039/c6ra11681g
Wei, Yi ; Lin, Chun Che ; Quan, Zewei ; Molokeev, Maxim S. ; Atuchin, Victor V. ; Chan, Ting Shan ; Liang, Yujun ; Lin, Jun ; Li, Guogang. / Structural evolution induced preferential occupancy of designated cation sites by Eu2+ in M5(Si3O9)2 (M = Sr, Ba, Y, Mn) phosphors. In: RSC Advances. 2016 ; Vol. 6, No. 62. pp. 57261-57265.
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AU - Molokeev, Maxim S.

AU - Atuchin, Victor V.

AU - Chan, Ting Shan

AU - Liang, Yujun

AU - Lin, Jun

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