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Preparation, crystal structure and up-conversion luminescence of Er3+, Yb3+ co-doped Gd2(WO4)3
Up-conversion (UC) phosphors Gd 2 (WO 4 ) 3 :Er 3+ /Yb 3+ were synthesized by a high temperature solid-state reaction method. The crystal structure of Gd 2 (WO 4 ) 3 :3% Er 3+ /10% Yb 3+ was refined by Rietveld method and it was showed that Er 3+ /Yb 3+ were successfully doped into the host lattice...
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| Published in: | RSC advances 2015-08, Vol.5 (89), p.7377-7382 |
|---|---|
| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Up-conversion (UC) phosphors Gd
2
(WO
4
)
3
:Er
3+
/Yb
3+
were synthesized by a high temperature solid-state reaction method. The crystal structure of Gd
2
(WO
4
)
3
:3% Er
3+
/10% Yb
3+
was refined by Rietveld method and it was showed that Er
3+
/Yb
3+
were successfully doped into the host lattice replacing Gd
3+
. Under 980 nm laser excitation, intense green and weak red emissions centered at around 532 nm, 553 nm, and 669 nm were observed, which were assigned to the Er
3+
ion transitions of
4
H
11/2
→
4
I
15/2
,
4
S
3/2
→
4
I
15/2
and
4
F
9/2
→
4
I
15/2
, respectively. The optimum Er
3+
doping concentration was determined as 3 mol% when the Yb
3+
concentration was fixed at 10 mol%. The pump power study indicated that the energy transfer from Yb
3+
to Er
3+
in Er
3+
, Yb
3+
co-doped Gd
2
(WO
4
)
3
was a two-photon process, and the related UC mechanism of energy transfer was discussed in detail.
The crystal structure of Er
3+
and Yb
3+
co-doped Gd
2
(WO
4
)
3
and the brilliant up-conversion green emission. |
|---|---|
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c5ra12959a |