najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2019-10-6-654-665najo-821Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХPhosphors with different morphology, formed under hydrothermal conditions on the basis of ZrO2:Eu3+ nanocrystallitesPhosphors with different morphology, formed under hydrothermal conditions on the basis of ZrO2:Eu3+ nanocrystallitesBugrovА. N.BugrovA. N.

Bolshoy pr. 31, 199004 St. Petersburg; ul. Professora Popova 5, 197376 St. Petersburg

Bolshoy pr. 31, 199004 St. Petersburg; ul. Professora Popova 5, 197376 St. Petersburg

alexander.n.bugrov@gmail.comSmyslovR. Yu.SmyslovR. Yu.

Bolshoy pr. 31, 199004 St. Petersburg; Polytechnicheskaya ul. 29, 195251 St. Petersburg

Bolshoy pr. 31, 199004 St. Petersburg; Polytechnicheskaya ul. 29, 195251 St. Petersburg

urs1968@gmail.comKhamovaT. V.KhamovaT. V.

Makarova nab. 2., letter B, 199034 St. Petersburg

Makarova nab. 2., letter B, 199034 St. Petersburg

tamarakhamova@gmail.comKirilenkoD. А.KirilenkoD. A.

Politekhnicheskaya ul. 26, 194021 St. Petersburg; Kronverskii avenue 49, 197101 St. Petersburg

Politekhnicheskaya ul. 26, 194021 St. Petersburg; Kronverskii avenue 49, 197101 St. Petersburg

demid.kirilenko@mail.ioffe.ruRodionovI. А.RodionovI. A.

Universitetskii prospect 26, Petergof, 198504 St. Petersburg

Universitetskii prospect 26, Petergof, 198504 St. Petersburg

i.rodionov@spbu.ruInstitute of Macromolecular Compounds RAS; Saint Petersburg Electrotechnical University “LETI”Institute of Macromolecular Compounds RAS; Saint Petersburg Electrotechnical University “LETI”Institute of Macromolecular Compounds RAS; Peter the Great St. Petersburg Polytechnic UniversityInstitute of Macromolecular Compounds RAS; Peter the Great St. Petersburg Polytechnic UniversityGrebenshchikov Institute of Silicate Chemistry RASGrebenshchikov Institute of Silicate Chemistry RASIoffe Institute RAS; ITMO UniversityIoffe Institute RAS; ITMO UniversityInstitute of Chemistry, Saint Petersburg State UniversityInstitute of Chemistry, Saint Petersburg State University201913082025106654665Copyright © Bugrov A.N., Smyslov R.Y., Khamova T.V., Kirilenko D.A., Rodionov I.A., 20252025Bugrov А.N., Smyslov R.Y., Khamova T.V., Kirilenko D.А., Rodionov I.А.Bugrov A.N., Smyslov R.Y., Khamova T.V., Kirilenko D.A., Rodionov I.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/821

Eu3+-doped ZrO2 nanostructures in the form of rods, stars, and hollow spheres were prepared by varying hydrothermal conditions. X-ray diffraction, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy, a low-temperature nitrogen adsorption method, Raman spectroscopy and photoluminescence spectra were used to characterize the polymorph modification, surface and optical properties of the Zr0.98Eu0.02O2 nanophosphors. The Eu3+ content in a zirconia monoclinic lattice, remained constant for all types of obtained nanostructures in order to reveal the morphology influence on the efficiency of electronic excitation energy transfer from the host matrix to photoactive centers. The decrease of the average size of the coherent scattering regions in the series rods → stars → hollow spheres, is associated with increasing the specific surface area values. At that, in the photoluminescence spectrum, the splitting of the sublevels associated with the monoclinic lattice 5D0 → 7F1 disappears.

Eu3+-doped ZrO2 nanostructures in the form of rods, stars, and hollow spheres were prepared by varying hydrothermal conditions. X-ray diffraction, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy, a low-temperature nitrogen adsorption method, Raman spectroscopy and photoluminescence spectra were used to characterize the polymorph modification, surface and optical properties of the Zr0.98Eu0.02O2 nanophosphors. The Eu3+ content in a zirconia monoclinic lattice, remained constant for all types of obtained nanostructures in order to reveal the morphology influence on the efficiency of electronic excitation energy transfer from the host matrix to photoactive centers. The decrease of the average size of the coherent scattering regions in the series rods → stars → hollow spheres, is associated with increasing the specific surface area values. At that, in the photoluminescence spectrum, the splitting of the sublevels associated with the monoclinic lattice 5D0 → 7F1 disappears.

hydrothermal synthesismonoclinic zirconiaeuropiumsolid solutionrodsstarshollow spheresnanocrystalsenergy gapphotoluminescencelifetimehydrothermal synthesismonoclinic zirconiaeuropiumsolid solutionrodsstarshollow spheresnanocrystalsenergy gapphotoluminescencelifetimeAlexander N. Bugrov appreciates the Russian Foundation for Basic Research (grant No. 16-33-60227) for the financial support Ruslan Smyslov is thankful for his funding received from the EU-H2020 research and innovation program under grant agreement No. 654360, having benefitted from the access provided by CEA/LETI in Grenoble within the framework of the NFFA-Europe Transnational Access Activity. X-ray diffraction experiments were performed on the Engineering Center equipment of the St. Petersburg State Technological Institute (Technical University). 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The authors declare that there are no conflicts of interest present.