Srivastava, A.M.

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1959d517-481e-4afb-8001-d9c50a8f8541
  • Srivastava, A.M. (1)
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Author's Bibliography

Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure

Antić, Željka; Đorđević, Vesna R.; Ristić, Zoran; Srivastava, A.M.; Beers, W.W.; Dramićanin, Miroslav; Brik, Mikhail G.

(2023) 

TY  - JOUR
AU  - Antić, Željka
AU  - Đorđević, Vesna R.
AU  - Ristić, Zoran
AU  - Srivastava, A.M.
AU  - Beers, W.W.
AU  - Dramićanin, Miroslav
AU  - Brik, Mikhail G.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11576
AB  - The importance of structural disorder of crystal lattice for the formation of the optical properties of impurity ions is studied by evaluating the optical properties of Cr3+ impurity ions in Mg1-xZnxAl2O4:Cr3+ (x = 0; 0.25; 0.50; 0.75; 1.0) spinel solid solutions. It is demonstrated that the gradual replacement of Zn by Mg, which transforms the normal spinel ZnAl2O4 into the inverse spinel MgAl2O4, leads to an enhancement of the Cr3+ red emission. In addition, the Cr3+ decay rate (inverse to the emitting excited state lifetime) increases linearly when Zn is gradually replaced by Mg. These observations are explained by the lifting of the parity selection rule due to the random distribution of the Zn and Mg cations in the second coordination sphere around the emitting ion, which lowers the local symmetry at the impurity ion site. The strategy of deliberately creating disorder in the crystalline lattice is a successful way of increasing brightness and decreasing the excited state lifetime of the impurity ions, which can be applied for improving emission properties of the phosphor materials used in solid state lighting.
T2  - Journal of Luminescence
T1  - Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure
VL  - 264
SP  - 120190
DO  - 10.1016/j.jlumin.2023.120190
ER  - 
@article{
author = "Antić, Željka and Đorđević, Vesna R. and Ristić, Zoran and Srivastava, A.M. and Beers, W.W. and Dramićanin, Miroslav and Brik, Mikhail G.",
year = "2023",
abstract = "The importance of structural disorder of crystal lattice for the formation of the optical properties of impurity ions is studied by evaluating the optical properties of Cr3+ impurity ions in Mg1-xZnxAl2O4:Cr3+ (x = 0; 0.25; 0.50; 0.75; 1.0) spinel solid solutions. It is demonstrated that the gradual replacement of Zn by Mg, which transforms the normal spinel ZnAl2O4 into the inverse spinel MgAl2O4, leads to an enhancement of the Cr3+ red emission. In addition, the Cr3+ decay rate (inverse to the emitting excited state lifetime) increases linearly when Zn is gradually replaced by Mg. These observations are explained by the lifting of the parity selection rule due to the random distribution of the Zn and Mg cations in the second coordination sphere around the emitting ion, which lowers the local symmetry at the impurity ion site. The strategy of deliberately creating disorder in the crystalline lattice is a successful way of increasing brightness and decreasing the excited state lifetime of the impurity ions, which can be applied for improving emission properties of the phosphor materials used in solid state lighting.",
journal = "Journal of Luminescence",
title = "Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure",
volume = "264",
pages = "120190",
doi = "10.1016/j.jlumin.2023.120190"
}
Antić, Ž., Đorđević, V. R., Ristić, Z., Srivastava, A.M., Beers, W.W., Dramićanin, M.,& Brik, M. G.. (2023). Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure. in Journal of Luminescence, 264, 120190.
https://doi.org/10.1016/j.jlumin.2023.120190
Antić Ž, Đorđević VR, Ristić Z, Srivastava A, Beers W, Dramićanin M, Brik MG. Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure. in Journal of Luminescence. 2023;264:120190.
doi:10.1016/j.jlumin.2023.120190 .
Antić, Željka, Đorđević, Vesna R., Ristić, Zoran, Srivastava, A.M., Beers, W.W., Dramićanin, Miroslav, Brik, Mikhail G., "Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure" in Journal of Luminescence, 264 (2023):120190,
https://doi.org/10.1016/j.jlumin.2023.120190 . .
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