Particle size effects on the structure and emission of Eu3+: LaPO4 and EuPO4 phosphors
Само за регистроване кориснике
2018
Аутори
Gavrilović, Tamara V.Periša, Jovana
Papan, Jelena
Vuković, Katarina
Smits, Krisjanis
Jovanović, Dragana J.
Dramićanin, Miroslav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
This paper provides the detailed study of (nano) particles size effect on structural and luminescent properties of LaPO4: Eu3+ synthesized by four different methods: high temperature solid-state, co-precipitation, reverse micelle and colloidal. These methods delivered monoclinic monazite-phase submicron particles ( GT 100 nm), 4 x 20 nm nanorods and 5 nm spheres (depending on the annealing temperature), 2 x 15 nm nanorods, and ultrasmall spheres (2 nm), respectively. The analysis of emission intensity dependence on Eu3+ concentration showed that quenching concentration increases with a decrease of the particle size. The critical distance for energy transfer between Eu3+ ions is found to be 18.2 angstrom, and the dipole-dipole interaction is the dominant mechanism responsible for the concentration quenching of emission. With the increase in Eu3+ concentration, the unit-cell parameter slightly increases to accommodate larger Eu3+ ions at sites of smaller La3+ ions. Photoluminescent emiss...ion spectra presented four characteristic bands in the red spectral region: at 592 nm (D-5(0) - GT F-7(1)), at 612 nm (D-5(0) - GT F-7(2)), at 652 nm (D-5(0) - GT F-7(3)) and at 684 nm (D-5(0) - GT F-7(4)), while in small colloidal nanoparticles additional emission bands from host defects appear at shorter wavelengths. Intensities of f-f electronic transitions change with particles size due to small changes in symmetry around europium sites, while emission bandwidths increase with the reduction of particle size due to increased structural disorder. Judd-Ofelt analysis showed that internal quantum yield of Eu3+ emission is strongly influenced by particles morphology.
Кључне речи:
Eu3+-doped LaPO4 / Solid state synthesis / Co-precipitation / Reverse micelle / ColloidsИзвор:
Journal of Luminescence, 2018, 195, 420-429Финансирање / пројекти:
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-45020)
- Утицај величине, облика и структуре наночестица на њихова својства и својства нанокомпозита (RS-172056)
- ERDF PostDoc project [1.1.1.2/VIAA/1/16/215 (1.1.1.2/16/I/001)]
DOI: 10.1016/j.jlumin.2017.12.002
ISSN: 0022-2313; 1872-7883
WoS: 000418470500060
Scopus: 2-s2.0-85038860046
Институција/група
VinčaTY - JOUR AU - Gavrilović, Tamara V. AU - Periša, Jovana AU - Papan, Jelena AU - Vuković, Katarina AU - Smits, Krisjanis AU - Jovanović, Dragana J. AU - Dramićanin, Miroslav PY - 2018 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1881 AB - This paper provides the detailed study of (nano) particles size effect on structural and luminescent properties of LaPO4: Eu3+ synthesized by four different methods: high temperature solid-state, co-precipitation, reverse micelle and colloidal. These methods delivered monoclinic monazite-phase submicron particles ( GT 100 nm), 4 x 20 nm nanorods and 5 nm spheres (depending on the annealing temperature), 2 x 15 nm nanorods, and ultrasmall spheres (2 nm), respectively. The analysis of emission intensity dependence on Eu3+ concentration showed that quenching concentration increases with a decrease of the particle size. The critical distance for energy transfer between Eu3+ ions is found to be 18.2 angstrom, and the dipole-dipole interaction is the dominant mechanism responsible for the concentration quenching of emission. With the increase in Eu3+ concentration, the unit-cell parameter slightly increases to accommodate larger Eu3+ ions at sites of smaller La3+ ions. Photoluminescent emission spectra presented four characteristic bands in the red spectral region: at 592 nm (D-5(0) - GT F-7(1)), at 612 nm (D-5(0) - GT F-7(2)), at 652 nm (D-5(0) - GT F-7(3)) and at 684 nm (D-5(0) - GT F-7(4)), while in small colloidal nanoparticles additional emission bands from host defects appear at shorter wavelengths. Intensities of f-f electronic transitions change with particles size due to small changes in symmetry around europium sites, while emission bandwidths increase with the reduction of particle size due to increased structural disorder. Judd-Ofelt analysis showed that internal quantum yield of Eu3+ emission is strongly influenced by particles morphology. T2 - Journal of Luminescence T1 - Particle size effects on the structure and emission of Eu3+: LaPO4 and EuPO4 phosphors VL - 195 SP - 420 EP - 429 DO - 10.1016/j.jlumin.2017.12.002 ER -
@article{ author = "Gavrilović, Tamara V. and Periša, Jovana and Papan, Jelena and Vuković, Katarina and Smits, Krisjanis and Jovanović, Dragana J. and Dramićanin, Miroslav", year = "2018", abstract = "This paper provides the detailed study of (nano) particles size effect on structural and luminescent properties of LaPO4: Eu3+ synthesized by four different methods: high temperature solid-state, co-precipitation, reverse micelle and colloidal. These methods delivered monoclinic monazite-phase submicron particles ( GT 100 nm), 4 x 20 nm nanorods and 5 nm spheres (depending on the annealing temperature), 2 x 15 nm nanorods, and ultrasmall spheres (2 nm), respectively. The analysis of emission intensity dependence on Eu3+ concentration showed that quenching concentration increases with a decrease of the particle size. The critical distance for energy transfer between Eu3+ ions is found to be 18.2 angstrom, and the dipole-dipole interaction is the dominant mechanism responsible for the concentration quenching of emission. With the increase in Eu3+ concentration, the unit-cell parameter slightly increases to accommodate larger Eu3+ ions at sites of smaller La3+ ions. Photoluminescent emission spectra presented four characteristic bands in the red spectral region: at 592 nm (D-5(0) - GT F-7(1)), at 612 nm (D-5(0) - GT F-7(2)), at 652 nm (D-5(0) - GT F-7(3)) and at 684 nm (D-5(0) - GT F-7(4)), while in small colloidal nanoparticles additional emission bands from host defects appear at shorter wavelengths. Intensities of f-f electronic transitions change with particles size due to small changes in symmetry around europium sites, while emission bandwidths increase with the reduction of particle size due to increased structural disorder. Judd-Ofelt analysis showed that internal quantum yield of Eu3+ emission is strongly influenced by particles morphology.", journal = "Journal of Luminescence", title = "Particle size effects on the structure and emission of Eu3+: LaPO4 and EuPO4 phosphors", volume = "195", pages = "420-429", doi = "10.1016/j.jlumin.2017.12.002" }
Gavrilović, T. V., Periša, J., Papan, J., Vuković, K., Smits, K., Jovanović, D. J.,& Dramićanin, M.. (2018). Particle size effects on the structure and emission of Eu3+: LaPO4 and EuPO4 phosphors. in Journal of Luminescence, 195, 420-429. https://doi.org/10.1016/j.jlumin.2017.12.002
Gavrilović TV, Periša J, Papan J, Vuković K, Smits K, Jovanović DJ, Dramićanin M. Particle size effects on the structure and emission of Eu3+: LaPO4 and EuPO4 phosphors. in Journal of Luminescence. 2018;195:420-429. doi:10.1016/j.jlumin.2017.12.002 .
Gavrilović, Tamara V., Periša, Jovana, Papan, Jelena, Vuković, Katarina, Smits, Krisjanis, Jovanović, Dragana J., Dramićanin, Miroslav, "Particle size effects on the structure and emission of Eu3+: LaPO4 and EuPO4 phosphors" in Journal of Luminescence, 195 (2018):420-429, https://doi.org/10.1016/j.jlumin.2017.12.002 . .