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Title

Tamm Plasmons Directionally Enhance Rare-Earth Nanophosphor Emission

AuthorsGeng, Dongling; Cabello-Olmo, Elena; Lozano, Gabriel CSIC ORCID; Míguez, Hernán CSIC ORCID
KeywordsOptical Tamm plasmons
Rare-earth nanophosphors
Nanophotonics
Photoluminescence enhancement
Color converters
Issue Date2019
PublisherAmerican Chemical Society
CitationACS photonics, 6: 634-641 (2019)
AbstractRare-earth-based phosphors are the materials on which current solid-state lighting technology is built. However, their large crystal size impedes the tuning, optimization, or manipulation of emitted light that can be achieved by their integration in nanophotonic architectures. Herein we demonstrate a hybrid plasmonic−photonic architecture capable of both channeling in a specific direction and enhancing by eight times the emission radiated by a macroscopically wide layer of nanophosphors. In order to do so, a slab of rare-earth-based nanocrystals is inserted between a dielectric multilayer and a metal film, following a rational design that optimizes the coupling of nanophosphor emission to collective modes sustained by the metal−dielectric system. Our approach is advantageous for the optimization of solid-state lighting systems.
Publisher version (URL)http://dx.doi.org/10.1021/acsphotonics.8b01407
URIhttp://hdl.handle.net/10261/183792
DOI10.1021/acsphotonics.8b01407
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