Er3+-Pr3+-Yb(3+)co-doped LaNbO4(LNO) phosphors were obtained by
solid-state reaction and their up-conversion properties have been
studied. The x-ray diffraction and Rietveld's refinement revealed no
evidence of significant structural changes or secondary phases in the
synthesized materials. According to the up-conversion measurements, the
observed emissions are due to Er(3+)ions which are present as
unintentional contaminant in the Pr(3+)doped and Pr3+-Yb(3+)co-doped
systems. The intensity of all the bands was enhanced with increasing
Yb(3+)concentration, and at 8%Yb(3+)a significant decrease of the green
and red emissions was found due to the presence of cross-relaxation
process between Er(3+)and Pr(3+)ions, mainly for green emissions because
of the back energy transfer mechanisms from Er(3+)to Yb3+. The
Commission Internationale de l'eclairage color coordinates of almost all
samples were located in the green region, while for the LNO: Pr
0.1%-Yb8% phosphor they were located in the blue region.
Red-Green-Blue phosphors were obtained from LaNbO4:
Pr3+/Er3+/Yb(3+)systems using the pair of activators Pr3+/Er(3+)which is
not commonly investigated in the literature.
%0 Journal Article
%1 WOS:000552927800002
%A do Nascimento, Joao P C
%A do Carmo, Felipe F
%A Facanha, Marcello X
%A Sales, Juscelino C
%A Gouveia, Daniel X
%A de Andrade, Humberto D
%A Junior, Idalmir S Queiroz
%A Sombra, Antonio S B
%C ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES
%D 2020
%I SPRINGER
%J JOURNAL OF ELECTRONIC MATERIALS
%K Er3+/Pr3+/Yb3+; contaminant; unintentional up-conversion} {LaNbO4;
%N 10
%P 6009-6015
%R 10.1007/s11664-020-08329-x, Early Access Date = JUL 2020
%T Up-Conversion Luminescence of Er3+/Pr3+/Yb3+ Co-doped LaNbO4 Phosphors
%V 49
%X Er3+-Pr3+-Yb(3+)co-doped LaNbO4(LNO) phosphors were obtained by
solid-state reaction and their up-conversion properties have been
studied. The x-ray diffraction and Rietveld's refinement revealed no
evidence of significant structural changes or secondary phases in the
synthesized materials. According to the up-conversion measurements, the
observed emissions are due to Er(3+)ions which are present as
unintentional contaminant in the Pr(3+)doped and Pr3+-Yb(3+)co-doped
systems. The intensity of all the bands was enhanced with increasing
Yb(3+)concentration, and at 8%Yb(3+)a significant decrease of the green
and red emissions was found due to the presence of cross-relaxation
process between Er(3+)and Pr(3+)ions, mainly for green emissions because
of the back energy transfer mechanisms from Er(3+)to Yb3+. The
Commission Internationale de l'eclairage color coordinates of almost all
samples were located in the green region, while for the LNO: Pr
0.1%-Yb8% phosphor they were located in the blue region.
Red-Green-Blue phosphors were obtained from LaNbO4:
Pr3+/Er3+/Yb(3+)systems using the pair of activators Pr3+/Er(3+)which is
not commonly investigated in the literature.
@article{WOS:000552927800002,
abstract = {Er3+-Pr3+-Yb(3+)co-doped LaNbO4(LNO) phosphors were obtained by
solid-state reaction and their up-conversion properties have been
studied. The x-ray diffraction and Rietveld's refinement revealed no
evidence of significant structural changes or secondary phases in the
synthesized materials. According to the up-conversion measurements, the
observed emissions are due to Er(3+)ions which are present as
unintentional contaminant in the Pr(3+)doped and Pr3+-Yb(3+)co-doped
systems. The intensity of all the bands was enhanced with increasing
Yb(3+)concentration, and at 8%Yb(3+)a significant decrease of the green
and red emissions was found due to the presence of cross-relaxation
process between Er(3+)and Pr(3+)ions, mainly for green emissions because
of the back energy transfer mechanisms from Er(3+)to Yb3+. The
Commission Internationale de l'eclairage color coordinates of almost all
samples were located in the green region, while for the LNO: Pr
0.1%-Yb8% phosphor they were located in the blue region.
Red-Green-Blue phosphors were obtained from LaNbO4:
Pr3+/Er3+/Yb(3+)systems using the pair of activators Pr3+/Er(3+)which is
not commonly investigated in the literature.},
added-at = {2022-05-23T20:00:14.000+0200},
address = {ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES},
author = {do Nascimento, Joao P C and do Carmo, Felipe F and Facanha, Marcello X and Sales, Juscelino C and Gouveia, Daniel X and de Andrade, Humberto D and Junior, Idalmir S Queiroz and Sombra, Antonio S B},
biburl = {https://www.bibsonomy.org/bibtex/28359d689dcec31594da402b2f37e8a16/ppgfis_ufc_br},
doi = {10.1007/s11664-020-08329-x, Early Access Date = JUL 2020},
interhash = {874cacab4428aab3fb58db12a24a960e},
intrahash = {8359d689dcec31594da402b2f37e8a16},
issn = {0361-5235},
journal = {JOURNAL OF ELECTRONIC MATERIALS},
keywords = {Er3+/Pr3+/Yb3+; contaminant; unintentional up-conversion} {LaNbO4;},
number = 10,
pages = {6009-6015},
publisher = {SPRINGER},
pubstate = {published},
timestamp = {2022-05-23T20:00:14.000+0200},
title = {Up-Conversion Luminescence of Er3+/Pr3+/Yb3+ Co-doped LaNbO4 Phosphors},
tppubtype = {article},
volume = 49,
year = 2020
}