Broadband Plasmonic Antenna Enhanced Upconversion and Its Application in Flexible Fingerprint Identification
- Authors
- Xu, W[Xu, Wen]; Lee, TK[Lee, Tae Kyung]; Moon, BS[Moon, Byeong-Seok]; Song, HW[Song, Hongwei]; Chen, X[Chen, Xu]; Chun, B[Chun, Byungae]; Kim, YJ[Kim, Young-Jin]; Kwak, SK[Kwak, Sang Kyu]; Chen, P[Chen, Peng]; Kim, DH[Kim, Dong-Hwan]
- Issue Date
- 19-Mar-2018
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- broadband plasmons; fingerprint identification; flexible devices; lanthanide-doped nanocrystals; plasmonic antennas; silver nanowire network; upconversion luminescence
- Citation
- ADVANCED OPTICAL MATERIALS, v.6, no.6
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED OPTICAL MATERIALS
- Volume
- 6
- Number
- 6
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/20656
- DOI
- 10.1002/adom.201701119
- ISSN
- 2195-1071
- 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.
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- Appears in
Collections - Engineering > Chemical Engineering > 1. Journal Articles
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