Published September 1, 2011 | Version v1
Journal article Metadata-only

Photoluminescence of TiO2 films co-doped with Tb3+/ Gd3+and energy transfer from TiO2/Gd3+ to Tb3+ ions

Creators

  • 1. College of Chemistry, Jilin University, Changchun 130012, No.2699, Qianjin Street (China)
  • 2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, No.2699, Qianjin Street (China)

Description

Nanometer TiO2 thin films doped with different concentration of Tb were prepared by sol-gel method and characterized by X-ray diffraction (XRD), thermogravimetry-differential thermal analysis (TG-DTA), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. XRD results show preferentially oriented (101) anatase films. TEM image indicates that the TiO2 films consist of TiO2 grains with diameter about 15 nm. Under room temperature, strong visible luminescence of Tb3+ ions due to intra-4f shell transitions are obtained and the PL intensity is found to have a well matching relation with the doping concentration of Tb3+ ions. Concentration quenching of PL occurs when Tb3+ concentration exceeds a certain value (9.2 mol%). Furthermore, the luminescence intensity is improved obviously after co-doping with Gd3+ ions because of the sensitization effects of Gd3+ ions to Tb3+ ions in TiO2 system. The energy transfer mechanism from TiO2 and Gd3+ ions to Tb3+ ions was proposed.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.tsf.2011.05.009

Additional details

Identifiers

DOI
10.1016/j.tsf.2011.05.009;
PII
S0040-6090(11)01141-2;

Publishing Information

Journal Title
Thin Solid Films
Journal Volume
519
Journal Issue
22
Journal Page Range
p. 7966-7970
ISSN
0040-6090
CODEN
THSFAP

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43052165
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
DIFFERENTIAL THERMAL ANALYSIS; DOPED MATERIALS; ENERGY TRANSFER; GADOLINIUM; GADOLINIUM IONS; PHOTOLUMINESCENCE; SOL-GEL PROCESS; SPECTROSCOPY; TERBIUM; TERBIUM IONS; THERMAL GRAVIMETRIC ANALYSIS; THIN FILMS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
Descriptors DEC
CHALCOGENIDES; CHARGED PARTICLES; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; EMISSION; FILMS; GRAVIMETRIC ANALYSIS; IONS; LUMINESCENCE; MATERIALS; METALS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; QUANTITATIVE CHEMICAL ANALYSIS; RARE EARTHS; SCATTERING; THERMAL ANALYSIS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.