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Journal of Nanomaterials
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Journal of Nanomaterials
/
2019
/
Article
/
Fig 4
/
Research Article
Efficient Color Tuning of Upconversion Luminescence from Core-Shell Oxysulfide Nanoparticles
Figure 4
The UCL processes of Y
2
O
2
S: Er
3+
@ Y
2
O
2
S: Yb
3+
, Ho
3+
and Y
2
O
2
S: Yb
3+
, Er
3+
, Ho
3+
samples under 980 nm excitation.
