Photoluminescence profile mapping of Eu(III) and Tb(III -> IV)-embedded in quantum size SnO2 nanoparticles

Title
Photoluminescence profile mapping of Eu(III) and Tb(III -> IV)-embedded in quantum size SnO2 nanoparticles
Author(s)
손영구최영인
Keywords
HOMOGENEOUS PRECIPITATION; LUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; NANOSTRUCTURES; FLUORESCENCE; NANORODS; GROWTH; NANOCRYSTALS; TEMPERATURE; MECHANISM
Issue Date
201407
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.4, no.59, pp.31155 - 31161
Abstract
Eu(III) and Tb(IV) activators were embedded in quantum size SnO2 nanoparticles by a hydrothermal method and their morphologies, crystal structures and spectroscopic properties were examined by transmission electron microscopy, X-ray diffraction crystallography, UV-visible absorption, and 2D/3D-photoluminescence mapping. Eu(III) embedment showed strong red emissions between 570 and 720 nm, which were attributed to the D-5(0) -> F-7(J) (J = 0, 1, 2, 3, 4) transitions. The magnetic dipole D-5(0) -> F-7(1) transition was dominated by an indirect charge transfer excitation, which was attributed to Eu(III) doped at centrosymmetric sites. Conversely, the electric dipole D-5(0) -> F-7(2) transition was dominated by direct excitation of Eu(III), which was attributed to Eu(III) at low symmetry sites. Tb(III) was oxidized to Tb(IV) in SnO2 and showed no characteristic green emissions. A full understanding of the photoluminescence mechanism of Eu(III) and Tb(IV) in SnO2 will provide new insights into the development of SnO2-based phosphor materials.
URI
http://hdl.handle.net/YU.REPOSITORY/31507http://dx.doi.org/10.1039/c4ra03966a
ISSN
2046-2069
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE