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Polymer Microfibers Incorporated with Silver Nanoparticles: a New Platform for Optical Sensing
Muhammad Khuram Shahzad1, Yundong Zhang2, Adil Raza3
1National Key Laboratory of Tunable Laser Technology, Institute of Opto-Electronics, Department of Electronic Science and Technology, Harbin Institute of Technology (HIT), Harbin, 150080, People's Republic of China.
Nanoscale Research Letters
|August 10, 2019
Summary
Silver-doped up-conversion nanoparticles (UCNPs) in microfibers show enhanced luminescence sensitivity and lower transmission loss. This facile method offers promising optical applications.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Enhanced sensitivity of up-conversion luminescence (UCL) is crucial for up-conversion nanoparticle (UCNP) applications.
- UCNPs are essential for various optical sensing and imaging technologies.
Purpose of the Study:
- To investigate the effect of silver (Ag) doping on the sensitivity and transmission losses of UCNPs within microfibers.
- To develop a facile method for creating Ag-doped UCNP microfibers for optical applications.
Main Methods:
- Fabrication of UCNP microfibers by co-doping tetrogonal-LiYF4:Yb3+/Er3+ with polymethylmethacrylate (PMMA) and silver (Ag) solutions.
- Investigation of transmission losses and luminescence sensitivities of UCNPs in the presence and absence of Ag.
Main Results:
- Ag-doped UCNP microfibers (LiYF4:Yb3+/Er3+/Ag) exhibited a luminescence sensitivity of 0.0095 K−1 at 303 K under a 980 nm laser source.
- UCNPs without Ag (LiYF4:Yb3+/Er3+) showed a reduced sensitivity of 0.0065 K−1.
- Ag-doped UCNP microfibers demonstrated lower transmission losses and higher sensitivity compared to those without Ag.
Conclusions:
- The incorporation of Ag into UCNP microfibers significantly enhances luminescence sensitivity and reduces transmission losses.
- This study presents the first observation of Ag-doped UCNP microfibers fabricated via a facile method.
- These Ag-doped UCNP microfibers are promising candidates for advanced optical applications.
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