TY  - JOUR
AU  - Dramićanin, Miroslav
AU  - Milićević, Bojana R.
AU  - Đorđević, Vesna R.
AU  - Ristić, Zoran
AU  - Zhou, Jianbang
AU  - Milivojević, Dušan
AU  - Papan, Jelena
AU  - Brik, Mikhail G.
AU  - Ma, Chong‐Geng
AU  - Srivastava, Alok M
AU  - Wu, Mingmei
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8360
AB  - Luminescence of monoclinic lithium metatitanate (Li2TiO3) powders activated with different quantities of Mn4+ is studied in detail. Its strong deep-red emission arising from the Mn4+ 2Eg → 4A2g spin forbidden transition is centered at around 688 nm and is suitable for luminescence thermometry. Structural and electron paramagnetic resonance analyses show that Mn4+ ions are equally distributed in two almost identical Ti4+ sites in which they are octahedrally coordinated by six oxygen ions. Calculations based on the exchange charge model of the crystal field provided values of Racah parameters (B=760 cm−1, C= 2993 cm−1), crystal-field splitting Dq= 2043 cm−1, and the nephelauxetic parameter β1=0.9775. The maximal quantum efficiency of 24.1% at room temperature is found for 0.126% Mn4+ concentration. Temperature quenching of emission occurs by a cross-over via 4T2 excited state of the Mn4+ ions with T1/2=262 K and is quite favorable for the application in the lifetime-based luminescence thermometry since relative changes in emission decay values are exceptionally-large (around 3.21% at room temperature). We derived theoretical expressions for the temperature dependence of the absolute and relative sensitivities and discuss the influence of host material properties on lifetime sensitivities. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
T2  - ChemistrySelect
T1  - Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry
VL  - 4
IS  - 24
SP  - 7067
EP  - 7075
DO  - 10.1002/slct.201901590
ER  - 

@article{
author = "Dramićanin, Miroslav and Milićević, Bojana R. and Đorđević, Vesna R. and Ristić, Zoran and Zhou, Jianbang and Milivojević, Dušan and Papan, Jelena and Brik, Mikhail G. and Ma, Chong‐Geng and Srivastava, Alok M and Wu, Mingmei",
year = "2019",
abstract = "Luminescence of monoclinic lithium metatitanate (Li2TiO3) powders activated with different quantities of Mn4+ is studied in detail. Its strong deep-red emission arising from the Mn4+ 2Eg → 4A2g spin forbidden transition is centered at around 688 nm and is suitable for luminescence thermometry. Structural and electron paramagnetic resonance analyses show that Mn4+ ions are equally distributed in two almost identical Ti4+ sites in which they are octahedrally coordinated by six oxygen ions. Calculations based on the exchange charge model of the crystal field provided values of Racah parameters (B=760 cm−1, C= 2993 cm−1), crystal-field splitting Dq= 2043 cm−1, and the nephelauxetic parameter β1=0.9775. The maximal quantum efficiency of 24.1% at room temperature is found for 0.126% Mn4+ concentration. Temperature quenching of emission occurs by a cross-over via 4T2 excited state of the Mn4+ ions with T1/2=262 K and is quite favorable for the application in the lifetime-based luminescence thermometry since relative changes in emission decay values are exceptionally-large (around 3.21% at room temperature). We derived theoretical expressions for the temperature dependence of the absolute and relative sensitivities and discuss the influence of host material properties on lifetime sensitivities. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",
journal = "ChemistrySelect",
title = "Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry",
volume = "4",
number = "24",
pages = "7067-7075",
doi = "10.1002/slct.201901590"
}

Dramićanin, M., Milićević, B. R., Đorđević, V. R., Ristić, Z., Zhou, J., Milivojević, D., Papan, J., Brik, M. G., Ma, C., Srivastava, A. M.,& Wu, M.. (2019). Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry. in ChemistrySelect, 4(24), 7067-7075.
https://doi.org/10.1002/slct.201901590

Dramićanin M, Milićević BR, Đorđević VR, Ristić Z, Zhou J, Milivojević D, Papan J, Brik MG, Ma C, Srivastava AM, Wu M. Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry. in ChemistrySelect. 2019;4(24):7067-7075.
doi:10.1002/slct.201901590 .

Dramićanin, Miroslav, Milićević, Bojana R., Đorđević, Vesna R., Ristić, Zoran, Zhou, Jianbang, Milivojević, Dušan, Papan, Jelena, Brik, Mikhail G., Ma, Chong‐Geng, Srivastava, Alok M, Wu, Mingmei, "Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry" in ChemistrySelect, 4, no. 24 (2019):7067-7075,
https://doi.org/10.1002/slct.201901590 . .