Dependence of the Mn4+ spectroscopic properties on the host composition: Case study of stannate pyrochlores A2Sn2O7 (A = La, Gd, Y, Lu)

M. G. Brik; A. M. Srivastava; C. G. Ma; M. Piasecki

doi:10.1016/j.jlumin.2019.116834

Dependence of the Mn⁴⁺ spectroscopic properties on the host composition: Case study of stannate pyrochlores A₂Sn₂O₇ (A = La, Gd, Y, Lu)

M. G. Brik^*
, A. M. Srivastava
, C. G. Ma
, M. Piasecki

^*Šī darba korespondējošais autors

Chongqing University of Posts and Telecommunications
University of Tartu
Jan Dlugosz University in Czestochowa
General Electric

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

12 Atsauces (Scopus)

Kopsavilkums

In this paper we have studied the spectroscopic properties of Mn⁴⁺ in four stannate pyrochlores A₂Sn₂O₇ (A = La, Gd, Y, Lu). Photoluminescence and photoluminescence excitation spectra were recorded at low temperature. The Mn⁴⁺ energy levels in all four hosts were calculated using the exchange charge model of crystal field. Consistent variation of the main spectroscopic features with the lattice constant and Mn–O distance are revealed. The findings of this combined experimental and theoretical study may be used to predict the Mn⁴⁺ spectroscopic characteristics in other similar materials.

Oriģinālvaloda	Angļu
Raksta numurs	116834
Žurnāls	Journal of Luminescence
Sējums	218
DOIs	https://doi.org/10.1016/j.jlumin.2019.116834
Publikācijas statuss	Publicēts - febr. 2020
Ārēji publicēts	Jā

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abstract = "In this paper we have studied the spectroscopic properties of Mn4+ in four stannate pyrochlores A2Sn2O7 (A = La, Gd, Y, Lu). Photoluminescence and photoluminescence excitation spectra were recorded at low temperature. The Mn4+ energy levels in all four hosts were calculated using the exchange charge model of crystal field. Consistent variation of the main spectroscopic features with the lattice constant and Mn–O distance are revealed. The findings of this combined experimental and theoretical study may be used to predict the Mn4+ spectroscopic characteristics in other similar materials.",

keywords = "Mn4+ luminescence, Red phosphors, White LEDs",

author = "Brik, \{M. G.\} and Srivastava, \{A. M.\} and Ma, \{C. G.\} and M. Piasecki",

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doi = "10.1016/j.jlumin.2019.116834",

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AU - Srivastava, A. M.

AU - Ma, C. G.

AU - Piasecki, M.

PY - 2020/2

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N2 - In this paper we have studied the spectroscopic properties of Mn4+ in four stannate pyrochlores A2Sn2O7 (A = La, Gd, Y, Lu). Photoluminescence and photoluminescence excitation spectra were recorded at low temperature. The Mn4+ energy levels in all four hosts were calculated using the exchange charge model of crystal field. Consistent variation of the main spectroscopic features with the lattice constant and Mn–O distance are revealed. The findings of this combined experimental and theoretical study may be used to predict the Mn4+ spectroscopic characteristics in other similar materials.

AB - In this paper we have studied the spectroscopic properties of Mn4+ in four stannate pyrochlores A2Sn2O7 (A = La, Gd, Y, Lu). Photoluminescence and photoluminescence excitation spectra were recorded at low temperature. The Mn4+ energy levels in all four hosts were calculated using the exchange charge model of crystal field. Consistent variation of the main spectroscopic features with the lattice constant and Mn–O distance are revealed. The findings of this combined experimental and theoretical study may be used to predict the Mn4+ spectroscopic characteristics in other similar materials.

KW - Mn4+ luminescence

KW - Red phosphors

KW - White LEDs

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