Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation
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2020
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© 2020 Elsevier B.V.
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Zirconia (ZrO2) coatings, doped with Gd3+ and Dy3+ in various concentrations, were created by the plasma electrolytic oxidation (PEO) process of zirconium by the addition of Gd2O3 and Dy2O3 particles to the supporting electrolyte, respectively. Their morphological, chemical, phase, and above all, photoluminescent (PL) properties were examined. Morphologies resemble the typical appearance for PEO created coatings. Incorporated rare-earth species are uniformly distributed over the coatings. Gd3+ ion gets more easily incorporated than Dy3+ by the PEO. The main identified phase of ZrO2 is monoclinic. Gd3+ induces the morphing to the tetragonal phase, proportional to its doping concentration. Gd3+ exhibits maximum emission at 313 nm, corresponding to the 6P7/2 → 8S7/2 transition, by the 278 nm excitation, with intensity proportional to the doping concentration. The spectra also feature a broad-band originating from ZrO2 host matrix. The ZrO2:Dy3+ spectra feature peaks at typical positions f...or 4f-4f transitions of Dy3+, overlapping with ZrO2 PL. The appearance of new sharp peaks when exciting into the charge transfer band of Dy3+-O2- in comparison to the direct 4f-4f excitation is due to the emissions from the higher levels of Dy3+. PL emission intensity of ZrO2 drops with increasing Gd3+ or Dy3+ concentrations, indicating an efficient energy transfer mechanism. CIE diagram showed that the emissions of ZrO2:Dy3+ correspond to the cool-white (at ca. 4000 K) and warm-white (at ca. 3000 K) light, by the 355 nm and 280 nm excitations, respectively.
Ključne reči:
photoluminescence / Plasma electrolytic oxidation / ZrO2:Dy3+ / ZrO2:Gd3+Izvor:
Journal of Alloys and Compounds, 2020, 832, 154907-Finansiranje / projekti:
- Ministry of Education, Science and Technological Development of the Republic of Serbia
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Ćirić, Aleksandar AU - Stojadinović, Stevan PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8937 AB - Zirconia (ZrO2) coatings, doped with Gd3+ and Dy3+ in various concentrations, were created by the plasma electrolytic oxidation (PEO) process of zirconium by the addition of Gd2O3 and Dy2O3 particles to the supporting electrolyte, respectively. Their morphological, chemical, phase, and above all, photoluminescent (PL) properties were examined. Morphologies resemble the typical appearance for PEO created coatings. Incorporated rare-earth species are uniformly distributed over the coatings. Gd3+ ion gets more easily incorporated than Dy3+ by the PEO. The main identified phase of ZrO2 is monoclinic. Gd3+ induces the morphing to the tetragonal phase, proportional to its doping concentration. Gd3+ exhibits maximum emission at 313 nm, corresponding to the 6P7/2 → 8S7/2 transition, by the 278 nm excitation, with intensity proportional to the doping concentration. The spectra also feature a broad-band originating from ZrO2 host matrix. The ZrO2:Dy3+ spectra feature peaks at typical positions for 4f-4f transitions of Dy3+, overlapping with ZrO2 PL. The appearance of new sharp peaks when exciting into the charge transfer band of Dy3+-O2- in comparison to the direct 4f-4f excitation is due to the emissions from the higher levels of Dy3+. PL emission intensity of ZrO2 drops with increasing Gd3+ or Dy3+ concentrations, indicating an efficient energy transfer mechanism. CIE diagram showed that the emissions of ZrO2:Dy3+ correspond to the cool-white (at ca. 4000 K) and warm-white (at ca. 3000 K) light, by the 355 nm and 280 nm excitations, respectively. T2 - Journal of Alloys and Compounds T1 - Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation VL - 832 SP - 154907 DO - 10.1016/j.jallcom.2020.154907 ER -
@article{ author = "Ćirić, Aleksandar and Stojadinović, Stevan", year = "2020", abstract = "Zirconia (ZrO2) coatings, doped with Gd3+ and Dy3+ in various concentrations, were created by the plasma electrolytic oxidation (PEO) process of zirconium by the addition of Gd2O3 and Dy2O3 particles to the supporting electrolyte, respectively. Their morphological, chemical, phase, and above all, photoluminescent (PL) properties were examined. Morphologies resemble the typical appearance for PEO created coatings. Incorporated rare-earth species are uniformly distributed over the coatings. Gd3+ ion gets more easily incorporated than Dy3+ by the PEO. The main identified phase of ZrO2 is monoclinic. Gd3+ induces the morphing to the tetragonal phase, proportional to its doping concentration. Gd3+ exhibits maximum emission at 313 nm, corresponding to the 6P7/2 → 8S7/2 transition, by the 278 nm excitation, with intensity proportional to the doping concentration. The spectra also feature a broad-band originating from ZrO2 host matrix. The ZrO2:Dy3+ spectra feature peaks at typical positions for 4f-4f transitions of Dy3+, overlapping with ZrO2 PL. The appearance of new sharp peaks when exciting into the charge transfer band of Dy3+-O2- in comparison to the direct 4f-4f excitation is due to the emissions from the higher levels of Dy3+. PL emission intensity of ZrO2 drops with increasing Gd3+ or Dy3+ concentrations, indicating an efficient energy transfer mechanism. CIE diagram showed that the emissions of ZrO2:Dy3+ correspond to the cool-white (at ca. 4000 K) and warm-white (at ca. 3000 K) light, by the 355 nm and 280 nm excitations, respectively.", journal = "Journal of Alloys and Compounds", title = "Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation", volume = "832", pages = "154907", doi = "10.1016/j.jallcom.2020.154907" }
Ćirić, A.,& Stojadinović, S.. (2020). Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation. in Journal of Alloys and Compounds, 832, 154907. https://doi.org/10.1016/j.jallcom.2020.154907
Ćirić A, Stojadinović S. Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation. in Journal of Alloys and Compounds. 2020;832:154907. doi:10.1016/j.jallcom.2020.154907 .
Ćirić, Aleksandar, Stojadinović, Stevan, "Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation" in Journal of Alloys and Compounds, 832 (2020):154907, https://doi.org/10.1016/j.jallcom.2020.154907 . .