Publication | Closed Access
Refractive Index Tuning of Hybrid Materials for Highly Transmissive Luminescent Lanthanide Particle–Polymer Composites
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Citations
43
References
2018
Year
High-refractive-index ZrO<sub>2</sub> nanoparticles were used to tailor the refractive index of a polymer matrix to match that of luminescent lanthanide-ion-doped (La<sub>0.92</sub>Yb<sub>0.075</sub>Er<sub>0.005</sub>F<sub>3</sub>) light-emitting particles, thereby reducing scattering losses to yield highly transparent emissive composites. Photopolymerization of blends of an amine-modified poly(ether acrylate) oligomer and tailored quantities of ZrO<sub>2</sub> nanoparticles yielded optically transparent composites with tailored refractive indices between 1.49 and 1.69. By matching the refractive index of the matrix to that of La<sub>0.92</sub>Yb<sub>0.075</sub>Er<sub>0.005</sub>F<sub>3</sub>, composites with high transmittance (>85%) and low haze from the visible to infrared regions, bright 1530 nm optical emissions were achieved at solids loadings of La<sub>0.92</sub>Yb<sub>0.075</sub>Er<sub>0.005</sub>F<sub>3</sub>, ranging from 5 to 30 vol %. These optical results suggest that a hybrid matrix approach is a versatile strategy for the fabrication of functional luminescent optical composites of high transparency.
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