Metal-enhanced fluorescence in polymer composite films with Au@Ag@SiO(2) nanoparticles and InP@ZnS quantum dots.

For white light-emitting diode (LED) applications, semiconductor quantum dots (QDs) have been widely utilized as efficient down-converters to change the blue color of the light source into different emission colors. Because QDs offer spectral tunability over the entire visible light range, as well as improved color purity, they have rapidly replaced conventional phosphor-based white LEDs. However, for the sustainable growth of QD-mediated LEDs, the amount of QDs required must be reduced by enhancing the color-conversion efficiency. For this purpose, we prepared poly(lauryl methacrylate) (PLMA) composite films by the photo-crosslinking polymerization of lauryl methacrylate monomers in the presence of Au@Ag@SiO2 nanoparticles (NPs) and InP@ZnS QDs. In the PLMA composites, the Au@Ag NPs not only amplified the blue light source but also modified the relaxation of the excited QDs via localized surface plasmon resonance. This resulted in a maximum 12.9-fold enhancement in the QD fluorescence. Because the blue light source in this study can be easily replaced by blue LEDs, the enhanced efficiency of QD emissions via the plasmonic effect could potentially increase the performance of QDs for display applications.

Kim KS ，Zakia M ，Yoon J ，Yoo SI ... -  《RSC Advances》

Effective Blue Light-Absorbing AuAg Nanoparticles in InP Quantum Dots-Based Color Conversion.

Yeo HJ ，Yoon SY ，Jo DY ，Kim HM ，Kwak J ，Kim SP ，Kim MJ ，Yang H ... -  《Materials》

Controllable Preparation of Ag-SiO(2) Composite Nanoparticles and Their Applications in Fluorescence Enhancement.

Tang L ，Liao C ，Guo Y ，Zhang Y ... -  《Materials》

Green Synthesis of InP/ZnS Core/Shell Quantum Dots for Application in Heavy-Metal-Free Light-Emitting Diodes.

Kuo TR ，Hung ST ，Lin YT ，Chou TL ，Kuo MC ，Kuo YP ，Chen CC ... -  《-》

Highly Bright Silica-Coated InP/ZnS Quantum Dot-Embedded Silica Nanoparticles as Biocompatible Nanoprobes.

Ham KM ，Kim M ，Bock S ，Kim J ，Kim W ，Jung HS ，An J ，Song H ，Kim JW ，Kim HM ，Rho WY ，Lee SH ，Park SM ，Kim DE ，Jun BH ... -  《INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES》