Near-infrared (NIR) to near-ultraviolet (NUV) upconversion (UP) luminescence properties were explored under 980 nm laser diode (LD) excitation in Yb
3+
Er
3+
codoped calcium fluoride (CaF
2
∶Yb
3+
Er
3+
) nanoparticles. The strong enhancement at 407 nm was observed. The results show that the UV enhancement is independent on both the Er
3+
concentration and the excited power
while dependent on the annealed time and the particle size. The UP mechanical and thermodynamics process were also discussed.
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Related Author
CHEN Xiumei
LI Xingyu
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XIE Xiaoji
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WANG Xiaoyong
DONG Hao
Related Institution
School of Flexible Electronics(Future Technologies) & Institute of Advanced Materials(IAM), Nanjing Tech University
Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University
College of Chemistry and Chemical Engineering, Lanzhou University
Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, School of Materials Science and Engineering, Changzhou University