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Journal of Nanomaterials
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Journal of Nanomaterials
/
2010
/
Article
/
Tab 1
/
Research Article
Dynamics of the Green and Red Upconversion Emissions in
-
-Codoped
Nanorods
Table 1
Free ion lifetimes of Yb
3+
and Er
3+
are reported in [
20
].
𝜏
(
Y
b
1
0
)
𝜏
(
E
r
1
0
)
𝜏
(
E
r
2
0
)
𝜏
(
E
r
3
0
)
𝜏
(
E
r
4
0
)
𝜏
(
E
r
2
1
)
𝜏
(
E
r
3
2
)
𝜏
(
E
r
4
3
)
Time (
𝜇
s)
670
6030
6810
644
698
11.061
39.15
387.60
