Luminescence, energy transfer, and upconversion mechanisms of Y(2)O(3) nanomaterials doped with Eu(3+), Tb(3+), Tm(3+), Er(3+), and Yb(3+) ions
Tran Kim Anh
Paul Benalloul
Charles Barthou
Lam Thi Kieu Giang
Nguyen Vu
Le Quoc Minh
Paul Benalloul
Charles Barthou
Lam Thi Kieu Giang
Nguyen Vu
Le Quoc Minh
Luminescence, energy transfer, and upconversion mechanisms of
nanophosphors (Y(2)O(3) : Eu(3+), Tb(3+), Y(2)O(3) : Tm(3+), Y(2)O(3) :
Er(3+), Yb(3+)) both in particle and colloidal forms were studied. The
structure, phase, and morphology of the nanopowders and nanocolloidal
media were determined by high-resolution TEM and X-ray diffraction. It
was shown that the obtained nanoparticles have a round-spherical shape
with average size in the range of 4 to 20 nm. Energy transfer was
observed for Y(2)O(3) : Eu(3+), Tb(3+) colloidal and powders,
upconversion transitions were observed for both Y(2)O(3) : Er(3+) and
Y(2)O(3) : Er(3+), Yb(3+) nanophosphors. The dependence of
photoluminescence (PL) spectra and decay times on doping concentration
has been investigated. The infrared to visible conversion of emission in
Y(2)O(3) : Er(3+), Yb(3+) system was analyzed and discussed aiming to
be applied in the photonic technology
Chi tiết xin mời tham khảo tại http://repository.vnu.edu.vn/handle/VNU_123/31874
Title: | Luminescence, energy transfer, and upconversion mechanisms of Y(2)O(3) nanomaterials doped with Eu(3+), Tb(3+), Tm(3+), Er(3+), and Yb(3+) ions |
Authors: | Tran Kim Anh Paul Benalloul Charles Barthou Lam Thi Kieu Giang Nguyen Vu Le Quoc Minh |
Keywords: | COMBUSTION SYNTHESIS;OPTICAL-PROPERTIES;PHOTOLUMINESCENT PROPERTIES;NANOCRYSTALLINE Y2O3EU;WAVE-GUIDES;GRAIN-SIZE;EMISSION;SPECTROSCOPY |
Issue Date: | 2007 |
Publisher: | HINDAWI PUBLISHING CORPORATION, 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA |
Citation: | ISIKNOWLEDGE |
Description: | JOURNAL OF NANOMATERIALS Article Number: 48247 Published: 2007 ; TNS07659 |
URI: | http://repository.vnu.edu.vn/handle/VNU_123/31874 |
ISSN: | 1687-4110 |
Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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