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Title: Broadband plasmonic antenna enhanced upconversion and its application in flexible fingerprint identification
Authors: Xu, Wen
Lee, Tae Kyung
Moon, Byeong-Seok
Song, Hongwei
Chen, Xu
Chun, Byungae
Kim, Young-Jin
Kwak, Sang Kyu
Chen, Peng
Kim, Dong-Hwan
Keywords: Engineering::Chemical engineering
Issue Date: 2018
Source: Xu, W., Lee, T. K., Moon, B.-S., Song, H., Chen, X., Chun, B., . . . Kim, D.-H. (2018). Broadband plasmonic antenna enhanced upconversion and its application in flexible fingerprint identification. Advanced Optical Materials, 6(6), 1701119-. doi:10.1002/adom.201701119
Journal: Advanced Optical Materials
Abstract: Plasmonic antennas based on metallic nanostructures that can trap long‐wavelength light can be used to substantially enhance the efficiency of optoelectronic devices by utilizing light beyond the visible region. This study experimentally and theoretically demonstrates that a silver nanowire network (AgNW‐net) plasmonic antenna exhibits superwide surface plasmon extinction because of the strong plasmon coupling between AgNWs, providing the ability to trap light spanning the entire solar spectrum. As a proof‐of‐concept demonstration, the AgNW‐net is used to greatly improve the luminescence of lanthanide‐doped upconversion nanocrystals (UCNCs) under dual wavelength excitation and the periodic alternating multilayer structure of AgNWs/UCNCs is further successfully introduced to improve the absolute luminescence intensity of AgNWs/UCNCs composite films. Furthermore, evidence has been provided that this improvement is attributable to excitation field enhancement rather than Purcell effect or plasmon‐enhanced energy transfer. Finally, an upconversion flexible fingerprint identification technology is developed based on AgNW‐net/UCNCs/polyvinyl alcohol composite materials, which allows us extracting fingerprints on various uneven bending surfaces.
ISSN: 2195-1071
DOI: 10.1002/adom.201701119
Rights: © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles


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