CONFERENCE PROCEEDINGS
Advanced Search >
Home > Proceedings > Volume 9919 > Article
Translator Disclaimer
16 September 2016 Efficient light trapping with ZnS-Au core-shell random medium
Radhika V. Nair; Venkata Siva Gummaluri; Dileep Kottilil; Vijayan C.
Author Affiliations +
Proceedings Volume 9919, Nanophotonic Materials XIII; 99190D (2016) https://doi.org/10.1117/12.2237106
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States
Abstract
Dielectric-plasmonic composite media are interesting systems as far as light trapping is considered owing to their enhanced interaction with light. Core-shell particles are of particular interest due to their strong scattering and geometry-dependent plasmon resonances which are tunable from visible to IR region. Design of random media with such highly scattering particles increases the probability of light getting trapped inside the medium due to the enhanced multiple scattering. Here we investigate the light scattering scenario in ZnS-Au core-shell random medium experimentally and also provide theoretical basis using Finite Difference Time Domain (FDTD) simulations. Back scattering and transmission simulations are carried out at standard wavelengths 405, 445, 532 and 632 nm. Effect of geometry on light scattering is also investigated by varying the aspect ratios of the particles. Scattering and absorption efficiency is calculated for particles in this size range using Mie theory. Strength and tunability of plasmon resonances are explained in terms of plasmon hybridization model. Core shell particles with core radius 100 nm and shell thickness of 6 nm are found to be optimal for light trapping over the entire visible region. Dielectric-plasmonic random media consisting of ZnS-Au core shell particles with optimized aspect ratio appear to be efficient candidate materials for light harvesting, sensing and optoelectronics.
Conference Presentation
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Radhika V. Nair, Venkata Siva Gummaluri, Dileep Kottilil, and Vijayan C. "Efficient light trapping with ZnS-Au core-shell random medium", Proc. SPIE 9919, Nanophotonic Materials XIII, 99190D (16 September 2016); https://doi.org/10.1117/12.2237106
PROCEEDINGS
 9 PAGES + PRESENTATION
DOWNLOAD PDF SAVE TO MY LIBRARY
WATCH
PRESENTATION
SHARE
GET CITATION
< Previous Article
|
Next Article >
Advertisement
Advertisement
KEYWORDS
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top