najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2019-10-3-361-373najo-572Research ArticleCHEMISTRY AND MATERIAL SCIENCEХИМИЯ И МАТЕРИАЛОВЕДЕНИЕStructure and photoluminescent properties of TiO2:Eu3+ nanoparticles synthesized under hydro and solvothermal conditions from different precursorsZavialovaA. Yu.

ul. Professora Popova 5, 197376 Saint Petersburg

Moskovsky prospect 26, Saint Petersburg, 190013

zavialova.a.y@gmail.comBugrovA. N.

ul. Professora Popova 5, 197376 Saint Petersburg

Bolshoy pr. 31, 199004 Saint Petersburg

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

Bolshoy pr. 31, 199004 Saint Petersburg

Polytechnicheskaya 29, 195251 Saint Petersburg

urs1968@gmail.comKirilenkoD. A.

Politekhnicheskaya ul. 26, 194021 Saint Petersburg

197101, Kronverskii avenue 49, Saint Petersburg

demid.kirilenko@mail.ioffe.ruKhamovaT. V.

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

tamarakhamova@gmail.comKopitsaG. P.

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

Orlova roscha mcr. 1, 188300, Gatchina, Leningrad region 

kopitsagp@pnpi.nrcki.ruLicitraC.

F-38000 Grenoble

christophe.licitra@cea.frRouchonD.

F-38000 Grenoble

denis.rouchon@cea.frSaint Petersburg Electrotechnical University “LETI”; Saint-Petersburg State Institute of Technology (Technical University)Russian FederationSaint Petersburg Electrotechnical University “LETI”; Institute of macromolecular compounds RASRussian FederationInstitute of macromolecular compounds RAS; Peter the Great Saint Petersburg Polytechnic UniversityRussian FederationIoffe Institute RAS; ITMO UniversityRussian FederationGrebenshchikov Institute of Silicate Chemistry RASRussian FederationGrebenshchikov Institute of Silicate Chemistry RAS; Petersburg Nuclear Physics Institute, NRC KIRussian FederationUniversity Grenoble Alpes, CEA, LETIFrance201907082025103361373Copyright © Zavialova A.Y., Bugrov A.N., Smyslov R.Y., Kirilenko D.A., Khamova T.V., Kopitsa G.P., Licitra C., Rouchon D., 20252025Zavialova A.Y., Bugrov A.N., Smyslov R.Y., Kirilenko D.A., Khamova T.V., Kopitsa G.P., Licitra C., Rouchon D.Zavialova A.Y., Bugrov A.N., Smyslov R.Y., Kirilenko D.A., Khamova T.V., Kopitsa G.P., Licitra C., Rouchon D.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/572

Crystalline phosphors of Eu3+-doped titania (TiO2:Eu3+) were prepared by hydro and solvothermal synthesis with luminescent ion concentration of 2 mol.%. The structure and shape of the synthesized nanoparticles were characterized using X-ray powder diffraction, transmission electron microscopy, and Raman spectroscopy. Changes in the emission, excitation spectra, and the intensity decay of the photoluminescence for TiO2:Eu3+ nanoparticles were analyzed their phase composition. The photoluminescence of synthesized TiO2:Eu3+ crystalline phosphors depends on whether the said nanophosphors are formed from organometallic or inorganic precursors under hydro- and solvothermal conditions. Indeed, photoluminescence excitation at wavelengths ranging from 350–550 nm leads to splitting of electron dipole transitions into Stark components according to the symmetry of the Eu3+ surroundings. Also, both nanoparticles with the anatase structure and phosphors predominantly containing rutile showed very short photoluminescence lifetimes.

hydrothermal synthesistitaniaeuropiumsolid solutionanataserutilenanophosphorsphotoluminescencefluorescence lifetimeAlexander N. Bugrov appreciates the Russian Foundation for Basic Research (grant No 16-33-60227) for the financial support. The experimental work was facilitated by the Engineering Center equipment of the St. Petersburg State Technological Institute (Technical University). TEM studies were performed using equipment of the Federal Joint Research Center “Material science and characterization in advanced technology” supported by the Ministry of Education and Science of the Russian Federation (id RFMEFI62117X0018). The authors express appreciation to Kopitsa G. P. from Petersburg Nuclear Physics Institute for the study of nanoparticles by the method of low-temperature nitrogen adsorption. Ruslan Yu. 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The authors declare that there are no conflicts of interest present.