Park, Kisun Jung, Kinam Kwon, Seok Joon Jang, Ho Seong Byun, Dongjin Han, Il Ki Ko, Hyungduk 2024-01-20T03:01:25Z 2024-01-20T03:01:25Z 2021-09-04 2016-11-15 1616-301X https://pubs.kist.re.kr/handle/201004/123436 A novel, efficient, cost-effective, and high-level security performance anticounterfeit device achieved by plasmonic-enhanced upconversion luminescence (UCL) is demonstrated. The plasmonic architecture consists of the randomly dispersed Ag nanowires (AgNWs) network, upconversion nanoparticles (UCNPs) monolayer, and metal film, in which the UCL is enhanced by a few tens, compared to reference sample, becuase the plasmonic modes lead to the concentration of the incident near infrared (NIR) light in the UCNPs monolayer. In the configuration, both the localized surface plasmons (LSPs) around the metallic nanostructures and gap plasmon polaritons (GPPs) confined in the UCNPs monolayer, significantly contribute to the UCL enhancement. The UCL enhancement mechanism resulting from enhanced NIR absorption, boosted internal quantum process, and formation of strong plasmonic hot spots in the plasmonic architecture is analyzed theoretically and numerically. More interestingly, a proof-of-concept anticounterfeit device using the plasmonic-enhanced UCL is proposed, through which a nonreusable and high-level cost-effective security device protecting the genuine products is realized. English WILEY-V C H VERLAG GMBH SURFACE-PLASMONS METAL NANOPARTICLES SOLAR-CELLS NANOCRYSTALS MECHANISM ANTENNAS SILVER PHASE FIELD SHAPE Plasmonic Nanowire-Enhanced Upconversion Luminescence for Anticounterfeit Devices Article 10.1002/adfm.201603428 1 ADVANCED FUNCTIONAL MATERIALS, v.26, no.43, pp.7836 - 7846 ADVANCED FUNCTIONAL MATERIALS 26 43 7836 7846 scie scopus 000388167400009 2-s2.0-84988420198 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article SURFACE-PLASMONS METAL NANOPARTICLES SOLAR-CELLS NANOCRYSTALS MECHANISM ANTENNAS SILVER PHASE FIELD SHAPE Ag nanowires anticounterfeit devices gap plasmon plasmonic effects upconversion