Abstract
The large energy-density enhancements, associated with the near-field of plasmonic metal nanoparticles (MNPs), can potentially be utilized to increase the efficiency of nonlinear processes such as upconversion (UC). A drawback of employing metallic structures for UC applications is luminescence quenching, i.e. the transfer of energy from the upconverter material to the metal, where it is dissipated as heat. In this study, a rate-equation model is applied to study the interplay between near-field enhancement and luminescence quenching for a range of different geometries. It is found that while shapes that incorporate pointy features and/or narrow gaps support stronger near-field enhancements, they also suffer more severely from luminescence quenching. Due to the strong correlation between the two effects, the predicted enhancement in UC luminescence is similar across all considered geometries ranging from 1 to 3. Our results indicate that the near-field of plasmonic MNPs might not be suitable for increasing UC efficiency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
