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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/288810
Title: Electrically switchable capabilities of conductive polymers-based plasmonic nanodisk arrays
Authors: Li, R.
Wei, X.
Liang, Y.
Gao, H.
Kurilkina, S.
Peng, W.
Issue Date: 2022
Publisher: Optica Publishing Group (formerly OSA)
Citation: Opt Express 2022;30(19):33627-33638
Abstract: The electrically dynamic regulation of plasmonic nanostructures provides a promising technology for integrated and miniaturized electro-optical devices. In this work, we systematically investigate the electrical regulation of optical properties of plasmonic Au nanodisk (AuND) arrays integrated with different conductive polymers, polypyrrole (PPy), polyaniline (PANI), and poly(3,4-ethylenedioxythiophene) (PEDOT), which show their respective superiority of electrical modulation by applying the appropriate low voltages. For the hybrid structure of polymer-coated AuND arrays, its reflection spectrum and corresponding structural color are dynamically modulated by altering the complex dielectric function of the covering nanometerthick conductive polymers based on the electrically controlled redox reaction. Due to the distinct refractive index responses of different polymers on the external voltage, polymer-coated AuND arrays exhibit different spectral variations, response time, and cycle stability. As a result, the reflection intensity of PPy-coated AuND arrays is mainly tailored by increasing optical absorption of the PPy polymer over a broad spectral range, which is distinguished from the wavelength shift of the resonance modes of AuND arrays induced by the other two polymers. Additionally, AuND arrays integrated with both PANI and PEDOT polymers exhibit a rapid switching time of less than 50 ms, which is 5 times smaller than the case of the PPy polymer. Most importantly, PPy-coated AuND arrays exhibit excellent cycle stability over 50 cycles compared to the other two polymers integrated devices. This work demonstrates a valuable technique strategy to realize high-performance polymer-coated dynamically tunable nanoscale electro-optical devices, which has especially significance for smart windows or dynamic display applications.
URI: https://elib.bsu.by/handle/123456789/288810
DOI: 10.1364/OE.471524
Scopus: 85137698564
Sponsorship: Funding. National Natural Science Foundation of China (61705100, 61727816, 62171076); Central University Basic Research Fund of China (DUT20RC(3)008). Acknowledgments. The authors acknowledge the financial support of DUT-BSU international cooperative project. The authors are thankful to Hao He for help in the experiment process and Hongxu Li for help with the paper drawing.
Licence: info:eu-repo/semantics/openAccess
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