Local structure and structural rigidity of the green phosphor β-SiAlON:Eu2+

J. Brgoch; M. W. Gaultois; M. Balasubramanian; K. Page; B. C. Hong; R. Seshadri

doi:10.1063/1.4901104

Local structure and structural rigidity of the green phosphor β-SiAlON:Eu²⁺

J. Brgoch, M. W. Gaultois, M. Balasubramanian, K. Page, B. C. Hong, R. Seshadri

Emerging and Solid-State Batteries

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Abstract

Eu²⁺ inserted in β-Si_3-xAl_xO_xN_4-x is a material that shows exceptional promise as a green-emitting phosphor. Synchrotron X-ray and neutron scattering, in conjunction with first-principles calculations and Eu L₃ X-ray absorption measurements, yield a consistent picture of the composition, and the favorable position for Eu²⁺ substitution in the crystal structure. The Debye temperature Θ_D, which is a proxy for structural rigidity relating to effectiveness as a phosphor, is very high for the starting β-Si₃N₄ framework and is determined to decrease only slightly for the small amounts of Al³⁺ and O^2- co-substitution that are required for charge balance associated with Eu²⁺ insertion.

Original language	English
Article number	181904
Journal	Applied Physics Letters
Volume	105
Issue number	18
DOIs	https://doi.org/10.1063/1.4901104
State	Published - Nov 3 2014

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title = "Local structure and structural rigidity of the green phosphor β-SiAlON:Eu2+",

abstract = "Eu2+ inserted in β-Si3-xAlxOxN4-x is a material that shows exceptional promise as a green-emitting phosphor. Synchrotron X-ray and neutron scattering, in conjunction with first-principles calculations and Eu L3 X-ray absorption measurements, yield a consistent picture of the composition, and the favorable position for Eu2+ substitution in the crystal structure. The Debye temperature ΘD, which is a proxy for structural rigidity relating to effectiveness as a phosphor, is very high for the starting β-Si3N4 framework and is determined to decrease only slightly for the small amounts of Al3+ and O2- co-substitution that are required for charge balance associated with Eu2+ insertion.",

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T1 - Local structure and structural rigidity of the green phosphor β-SiAlON:Eu2+

AU - Brgoch, J.

AU - Gaultois, M. W.

AU - Balasubramanian, M.

AU - Page, K.

AU - Hong, B. C.

AU - Seshadri, R.

PY - 2014/11/3

Y1 - 2014/11/3

N2 - Eu2+ inserted in β-Si3-xAlxOxN4-x is a material that shows exceptional promise as a green-emitting phosphor. Synchrotron X-ray and neutron scattering, in conjunction with first-principles calculations and Eu L3 X-ray absorption measurements, yield a consistent picture of the composition, and the favorable position for Eu2+ substitution in the crystal structure. The Debye temperature ΘD, which is a proxy for structural rigidity relating to effectiveness as a phosphor, is very high for the starting β-Si3N4 framework and is determined to decrease only slightly for the small amounts of Al3+ and O2- co-substitution that are required for charge balance associated with Eu2+ insertion.

AB - Eu2+ inserted in β-Si3-xAlxOxN4-x is a material that shows exceptional promise as a green-emitting phosphor. Synchrotron X-ray and neutron scattering, in conjunction with first-principles calculations and Eu L3 X-ray absorption measurements, yield a consistent picture of the composition, and the favorable position for Eu2+ substitution in the crystal structure. The Debye temperature ΘD, which is a proxy for structural rigidity relating to effectiveness as a phosphor, is very high for the starting β-Si3N4 framework and is determined to decrease only slightly for the small amounts of Al3+ and O2- co-substitution that are required for charge balance associated with Eu2+ insertion.

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DO - 10.1063/1.4901104

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VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 181904

ER -

Local structure and structural rigidity of the green phosphor β-SiAlON:Eu²⁺

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