研究目的
Investigating the use of all-inorganic halide perovskite nanocrystals (IHPNs) doped polymer microfibers for developing active waveguides with low optical loss.
研究成果
The study demonstrates that all-inorganic perovskite nanocrystals can be effectively used in polymer microfibers as active luminophores, achieving low optical loss. The Mn:CsPb(Br/Cl)3 IHPNs-doped polymer microfibers exhibited a record-low optical loss, highlighting the potential of perovskite nanocrystals in photonic technologies.
研究不足
The study mentions the need for an improved fabrication method to obtain large-sized microfibers with smooth surfaces to reduce surface scattering loss.
1：Experimental Design and Method Selection:
The study employed the direct drawing method to fabricate IHPNs-doped polymer microfibers. Poly(methyl methacrylate) (PMMA) was used as the polymer matrix material due to its high mechanical strength and transparency.
2：Sample Selection and Data Sources:
CsPbBr3 and Mn:CsPb(Br/Cl)3 IHPNs were synthesized through hot-injection methods.
3：List of Experimental Equipment and Materials:
Chemicals included cesium carbonate, lead bromide, manganese chloride, 1-octadecene, trioctylphosphine, oleylamine, and oleic acid. Equipment included a transmission electron microscope (TEM), scanning electron microscopy (SEM), and optical microscope.
4：Experimental Procedures and Operational Workflow:
IHPNs-doped PMMA solution was dropped on a substrate, and a sharp tip was used to draw microfibers. The diameter and length of microfibers were controlled by adjusting the drawing speed and viscosity of the polymer.
5：Data Analysis Methods:
The waveguiding loss was quantitatively determined by detecting the PL intensity at different positions using a charge coupled device (CCD).
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