Spectroscopy of Mn4+ in double perovskites, La2LiSbO6 and La2MgTiO6: Deep red photon generators for agriculture LEDs

A. M. Srivastava; M. G. Brik; H. A. Comanzo; W. W. Beers; W. E. Cohen; T. Pocock

doi:10.1149/2.0191801jss

Spectroscopy of Mn⁴⁺ in double perovskites, La₂LiSbO₆ and La₂MgTiO₆: Deep red photon generators for agriculture LEDs

A. M. Srivastava
, M. G. Brik
, H. A. Comanzo
, W. W. Beers
, W. E. Cohen
, T. Pocock

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

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

77 Atsauces (Scopus)

Kopsavilkums

The optical properties of Mn⁴⁺ (3d³) in the double perovskites, La₂LiSbO₆ and La₂MgTiO₆, are investigated. The Mn⁴⁺ energy levels are calculated using the exchange charge model of crystal-field theory and compared with the experimental spectroscopic data. A comparative study of the optical properties of Mn⁴⁺ in the perovskite structure shows that energy of the ²Eg→⁴A_2g emission transition is determined by octahedral site distortion. The greater is the site distortion, the lower is the Mn-O covalent interaction and the higher is the energy of the ²Eg→⁴A_2g emission transition. The work provides guidelines for the development of deep red emitting phosphors for agricultural (horticultural) applications.

Oriģinālvaloda	Angļu
Lapas (no-līdz)	R3158-R3162
Žurnāls	ECS Journal of Solid State Science and Technology
Sējums	7
Izdevuma numurs	1
DOIs	https://doi.org/10.1149/2.0191801jss
Publikācijas statuss	Publicēts - 2018
Ārēji publicēts	Jā

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title = "Spectroscopy of Mn4+ in double perovskites, La2LiSbO6 and La2MgTiO6: Deep red photon generators for agriculture LEDs",

abstract = "The optical properties of Mn4+ (3d3) in the double perovskites, La2LiSbO6 and La2MgTiO6, are investigated. The Mn4+ energy levels are calculated using the exchange charge model of crystal-field theory and compared with the experimental spectroscopic data. A comparative study of the optical properties of Mn4+ in the perovskite structure shows that energy of the 2Eg→4A2g emission transition is determined by octahedral site distortion. The greater is the site distortion, the lower is the Mn-O covalent interaction and the higher is the energy of the 2Eg→4A2g emission transition. The work provides guidelines for the development of deep red emitting phosphors for agricultural (horticultural) applications.",

author = "Srivastava, \{A. M.\} and Brik, \{M. G.\} and Comanzo, \{H. A.\} and Beers, \{W. W.\} and Cohen, \{W. E.\} and T. Pocock",

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doi = "10.1149/2.0191801jss",

language = "English",

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Spectroscopy of Mn⁴⁺ in double perovskites, La₂LiSbO₆ and La₂MgTiO₆: Deep red photon generators for agriculture LEDs. / Srivastava, A. M.; Brik, M. G.; Comanzo, H. A. u.c.
(gadā): ECS Journal of Solid State Science and Technology, Sēj. 7, Nr. 1, 2018, lpp. R3158-R3162.

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

TY - JOUR

T1 - Spectroscopy of Mn4+ in double perovskites, La2LiSbO6 and La2MgTiO6

T2 - Deep red photon generators for agriculture LEDs

AU - Srivastava, A. M.

AU - Brik, M. G.

AU - Comanzo, H. A.

AU - Beers, W. W.

AU - Cohen, W. E.

AU - Pocock, T.

PY - 2018

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AB - The optical properties of Mn4+ (3d3) in the double perovskites, La2LiSbO6 and La2MgTiO6, are investigated. The Mn4+ energy levels are calculated using the exchange charge model of crystal-field theory and compared with the experimental spectroscopic data. A comparative study of the optical properties of Mn4+ in the perovskite structure shows that energy of the 2Eg→4A2g emission transition is determined by octahedral site distortion. The greater is the site distortion, the lower is the Mn-O covalent interaction and the higher is the energy of the 2Eg→4A2g emission transition. The work provides guidelines for the development of deep red emitting phosphors for agricultural (horticultural) applications.

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