Structure and photoluminescent properties of TiO2:Eu3+ nanoparticles synthesized under hydro and solvothermal conditions from different precursors

被引：6

作者：

Zavialova, A. Yu ^{[1
,2
]}

Bugrov, A. N. ^{[1
,3
]}

Smyslov, R. Yu ^{[3
,4
]}

Kirilenko, D. A. ^{[5
,6
]}

Khamova, T., V ^{[7
]}

Kopitsa, G. P. ^{[7
,8
]}

Licitra, C. ^{[9
]}

Rouchon, D. ^{[9
]}

机构：

[1] St Petersburg Electrotech Univ LETI, Ul Prof Popova 5, St Petersburg 197376, Russia

[2] Tech Univ, St Petersburg State Inst Technol, Moskovsky Prospect 26, St Petersburg 190013, Russia

[3] RAS, Inst Macromol Cpds, Bolshoy Pr 31, St Petersburg 199004, Russia

[4] Peter Great St Petersburg Polytech Univ, Polytech Skaya 29, St Petersburg 195251, Russia

[5] Ioffe Inst RAS, Politekhnicheskaya Ul 26, St Petersburg 194021, Russia

[6] ITMO Univ, Kronverskii Ave 49, St Petersburg 197101, Russia

[7] Grebenshchikov Inst Silicate Chem RAS, Makarova Nab 2,Letter B, St Petersburg 199034, Russia

[8] NRC KI, Petersburg Nucl Phys Inst, Orlova Roscha Mcr 1, Gatchina 188300, Leningrad Regio, Russia

[9] Univ Grenoble Alpes, CEA, LETI, F-38000 Grenoble, France

来源：

NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS | 2019年 / 10卷 / 03期

基金：

俄罗斯基础研究基金会; 欧盟地平线“2020”;

关键词：

hydrothermal synthesis; titania; europium; solid solution; anatase; rutile; nanophosphors; photoluminescence; fluorescence lifetime; LUMINESCENT PROPERTIES; LANTHANIDE; EMISSION; RAMAN; COMPLEXES; LIFETIME; PHOSPHOR; SPECTRA; ANATASE; TB3+;

D O I：

10.17586/2220-8054-2019-10-3-361-373

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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:Eu(3+)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.

引用

页码：361 / 373

页数：13