Published September 2013 | Version v1
Journal article Metadata-only

Facile hydrothermal synthesis and upconversion luminescence of tetragonal Sr2LnF7:Yb3+/Er3+ (Ln = Y, Gd) nanocrystals

Creators

  • 1. School of Materials Sciences and Technology, China University of Geosciences, Beijing (China)

Description

Alkali-earth-rare-earth complex fluoride materials, Sr2LnF7:Yb3+/Er3+ (Ln = Y, Gd) have been prepared via a facile hydrothermal method by using a chelating agent. X-ray diffraction (XRD) and transmission electron microscopy (TEM) assays revealed that the as-synthesized Sr2LnF7 nanocrystals (NCs) are of tetragonal structure with pure phase. The upconversion (UC) emission spectra of both Sr2YF7:Yb3+/Er3+ and Sr2GdF7:Yb3+/Er3+ NCs mainly include two parts, the green emission peaks at 524 and 540 nm are assigned to the (2H11/2, 4S3/2)-4I15/2 transitions of the Er3+ ions, and the red emission peaks centered at 653 nm are attributed to the Er3+4F9/2- 4I15/2 transition. The luminescence mechanism analysis indicates that the energy transfer from Yb3+ to Er 3+ is ascribed to the two-photon process. (copyright 2013 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssa.201329114

Additional details

Identifiers

DOI
10.1002/pssa.201329114;

Publishing Information

Journal Title
Physica Status Solidi. A, Applications and Materials Science
Journal Volume
210
Journal Issue
9
Journal Page Range
p. 1734-1737
ISSN
1862-6300
CODEN
PSSABA

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
45009907
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHELATING AGENTS; CONCENTRATION RATIO; CRYSTALS; DOPED MATERIALS; ELECTRON DIFFRACTION; EMISSION SPECTRA; ENERGY-LEVEL TRANSITIONS; ERBIUM IONS; GADOLINIUM FLUORIDES; HYDROTHERMAL SYNTHESIS; MULTI-PHOTON PROCESSES; NANOSTRUCTURES; PHOTOLUMINESCENCE; STRONTIUM FLUORIDES; TETRAGONAL LATTICES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; YTTERBIUM IONS; YTTRIUM FLUORIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHARGED PARTICLES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; DIMENSIONLESS NUMBERS; ELECTRON MICROSCOPY; EMISSION; FLUORIDES; FLUORINE COMPOUNDS; GADOLINIUM COMPOUNDS; GADOLINIUM HALIDES; HALIDES; HALOGEN COMPOUNDS; IONS; LUMINESCENCE; MATERIALS; MICROSCOPY; PHOTON EMISSION; RARE EARTH COMPOUNDS; SCATTERING; SPECTRA; STRONTIUM COMPOUNDS; STRONTIUM HALIDES; SYNTHESIS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; YTTRIUM HALIDES