Eu3+ activated LaPO4 phosphors were prepared by a high-temperature solid-state method and irradiated to different high-doses gamma-radiation in the 0-4 MGy range. No effects of high-doses of high-energy radiation on phosphor's morphology and structure were observed, as documented by electron microscopy and X-ray diffraction measurements. On the other hand, photoluminescence measurements showed that emission properties of phosphor were affected by gamma-radiation; changes in radiative properties being prominent for absorbed radiation doses up to 250 kGy after which no additional changes are observed. Judd-Ofelt analysis of emission spectra is performed to thoroughly investigate radiative properties of phosphors. Analysis showed that radiative transition probability of Eu3+ emission decreases while non-radiative probability increases upon gamma-irradiation. Quantum efficiency of emission is decreased from about 46% to 35% when Eu3+ doped LaPO4 powders are exposed to gamma-radiation of 25...0 kGy dose, showing no additional decrease for higher gamma-radiation doses.
TY - JOUR
AU - Vujčić, Ivica
AU - Gavrilović, Tamara V.
AU - Sekulić, Milica
AU - Mašić, Slobodan
AU - Putić, Slaviša
AU - Papan, Jelena
AU - Dramićanin, Miroslav
PY - 2018
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4039
AB - Eu3+ activated LaPO4 phosphors were prepared by a high-temperature solid-state method and irradiated to different high-doses gamma-radiation in the 0-4 MGy range. No effects of high-doses of high-energy radiation on phosphor's morphology and structure were observed, as documented by electron microscopy and X-ray diffraction measurements. On the other hand, photoluminescence measurements showed that emission properties of phosphor were affected by gamma-radiation; changes in radiative properties being prominent for absorbed radiation doses up to 250 kGy after which no additional changes are observed. Judd-Ofelt analysis of emission spectra is performed to thoroughly investigate radiative properties of phosphors. Analysis showed that radiative transition probability of Eu3+ emission decreases while non-radiative probability increases upon gamma-irradiation. Quantum efficiency of emission is decreased from about 46% to 35% when Eu3+ doped LaPO4 powders are exposed to gamma-radiation of 250 kGy dose, showing no additional decrease for higher gamma-radiation doses.
PB - Elsevier Science Bv, Amsterdam
T2 - Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Ato
T1 - Gamma-radiation effects on luminescence properties of Eu3+ activated LaPO4 phosphor
EP - 90
SP - 85
VL - 422
DO - 10.1016/j.nimb.2018.03.002
ER -
@article{
author = "Vujčić, Ivica and Gavrilović, Tamara V. and Sekulić, Milica and Mašić, Slobodan and Putić, Slaviša and Papan, Jelena and Dramićanin, Miroslav",
year = "2018",
abstract = "Eu3+ activated LaPO4 phosphors were prepared by a high-temperature solid-state method and irradiated to different high-doses gamma-radiation in the 0-4 MGy range. No effects of high-doses of high-energy radiation on phosphor's morphology and structure were observed, as documented by electron microscopy and X-ray diffraction measurements. On the other hand, photoluminescence measurements showed that emission properties of phosphor were affected by gamma-radiation; changes in radiative properties being prominent for absorbed radiation doses up to 250 kGy after which no additional changes are observed. Judd-Ofelt analysis of emission spectra is performed to thoroughly investigate radiative properties of phosphors. Analysis showed that radiative transition probability of Eu3+ emission decreases while non-radiative probability increases upon gamma-irradiation. Quantum efficiency of emission is decreased from about 46% to 35% when Eu3+ doped LaPO4 powders are exposed to gamma-radiation of 250 kGy dose, showing no additional decrease for higher gamma-radiation doses.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Ato",
title = "Gamma-radiation effects on luminescence properties of Eu3+ activated LaPO4 phosphor",
pages = "90-85",
volume = "422",
doi = "10.1016/j.nimb.2018.03.002"
}
Vujčić, I., Gavrilović, T. V., Sekulić, M., Mašić, S., Putić, S., Papan, J.,& Dramićanin, M.. (2018). Gamma-radiation effects on luminescence properties of Eu3+ activated LaPO4 phosphor. in Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Ato
Elsevier Science Bv, Amsterdam., 422, 85-90.
https://doi.org/10.1016/j.nimb.2018.03.002
Vujčić I, Gavrilović TV, Sekulić M, Mašić S, Putić S, Papan J, Dramićanin M. Gamma-radiation effects on luminescence properties of Eu3+ activated LaPO4 phosphor. in Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Ato. 2018;422:85-90.
doi:10.1016/j.nimb.2018.03.002 .
Vujčić, Ivica, Gavrilović, Tamara V., Sekulić, Milica, Mašić, Slobodan, Putić, Slaviša, Papan, Jelena, Dramićanin, Miroslav, "Gamma-radiation effects on luminescence properties of Eu3+ activated LaPO4 phosphor" in Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Ato, 422 (2018):85-90,
https://doi.org/10.1016/j.nimb.2018.03.002 . .
