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Zhuang B, Zhang M, Li A, Zhang Q, Liu J, Zheng Z, Wang H. Dynamic multicolour tuning in π-conjugated polymers towards flexible electrochromic displays. J Colloid Interface Sci 2024; 676:670-679. [PMID: 39053414 DOI: 10.1016/j.jcis.2024.07.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 06/27/2024] [Accepted: 07/16/2024] [Indexed: 07/27/2024]
Abstract
Multicolour electrochromic materials have been considered as a promising alternative to achieve dynamic full-colour tuning towards next-generation electronic display technology. However, the development of electrochromics with wide colour gamut and subtle multicolour tunability still remains challenging due to inflexible energy level structures in intrinsic active materials. Herein, the electrochromic π-conjugated polymers with rich and subtle colour tunability were designed and developed based on a fine adjustment on the energy level structures. The chromatic transition covers almost full-colour gamut, and each colour scheme has a rich variety of categories stemming from versatile hues, chromas and lightnesses. Moreover, the multicolour π-conjugated polymers also demonstrate superior overall electrochromic performance, including fast switching (∼1.0 s), high colouration efficiency (160.4 cm2 C-1@550 nm) and good reversibility (over 90 % retention after 10,000 cycles). As a proof of concept, ultrathin and flexible prototype devices are developed by utilizing the multicolour π-conjugated polymers as electrochromic active layer, exhibiting a wide colour gamut and highly saturated multicolour tunability. The design principles proposed in this work may also be applicable to diverse optoelectronic applications.
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Affiliation(s)
- Biying Zhuang
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Meiyu Zhang
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Ang Li
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Qianqian Zhang
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China.
| | - Jingbing Liu
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Zilong Zheng
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China.
| | - Hao Wang
- Key Laboratory for New Functional Materials of Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China.
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2
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Wang S, Yin H, Li Y, Du Z, Zhang YM, Zhang SXA. Spectrum Reconstruction Model Based on Multispectral Electrochromic Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2400979. [PMID: 38994880 DOI: 10.1002/advs.202400979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Indexed: 07/13/2024]
Abstract
Reconstructing the visible spectra of real objects is critical to the spectral camouflage from emerging spectral imaging. Electrochromic materials exhibit unique superiority for this goal due to their subtractive color-mixing model and structural diversity. Herein, a simulation model is proposed and a method is developed to fabricate electrochromic devices for dynamically reproducing the visible spectrum of the natural leaf. Over 20 kinds of pH-dependent leuco dyes have been synthesized/prepared through molecular engineering and offered available spectra/bands to reconstruct the spectrum of the natural leaf. More importantly, the spectral variance between the device and leaf is optimized from an initial 98.9 to an ideal 10.3 through the simulation model, which means, the similarity increased nearly nine-fold. As a promising spectrum reconstruction approach, it will promote the development of smart photoelectric materials in adaptive camouflage, spectral display, high-end encryption, and anti-counterfeiting.
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Affiliation(s)
- Shuo Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Hang Yin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
| | - Yang Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Zhen Du
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yu-Mo Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Sean Xiao-An Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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3
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Huo D, Li G. Bi-Directional Full-Color Generation and Tri-Channel Information Encoding Based on a Plasmonic Metasurface. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1160. [PMID: 38998765 PMCID: PMC11243537 DOI: 10.3390/nano14131160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/25/2024] [Accepted: 06/07/2024] [Indexed: 07/14/2024]
Abstract
Dynamic optical structural color is always desired in various display applications and usually involves active materials. Full-color generation, especially bi-directional full-color generation in both reflective and transmissive modes, without any active materials included, has rarely been investigated. Herein, we demonstrate a scheme of bi-directional full-color generation based on a plasmonic metasurface modulated by the rotation of the polarization angle of the incident light without varying the geometry and the optical properties of the materials and the environment where the metasurface resides. The metasurface unit cell consists of plasmonic modules aligning in three directions and is patterned in a square array. The metasurface structural color device is numerically confirmed to generate full colors in both reflection and transmission. Based on the proposed polarization-dependent structural color, the information encoding process is demonstrated for three multiplexed animal images and quick-responsive (QR) codes to verify the efficient information encoding and decoding of the proposed scheme. In the simulation, the animals can be seen under different polarization incidences, and the QR codes can be successfully decoded by the polarization rotation in transmission. The proposed bi-directional full-color generation metasurface has great potential in applications such as kaleidoscope generation, anti-counterfeiting, dynamic color display, and optical information encoding.
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Affiliation(s)
- Dewang Huo
- Intelligent Optical Imaging and Sensing Group, Institute of Optoelectronics, State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontier Base of Intelligent Optoelectronics and Perception, Fudan University, Shanghai 200438, China
- Zhejiang Laboratory, Hangzhou 311100, China
| | - Guoqiang Li
- Intelligent Optical Imaging and Sensing Group, Institute of Optoelectronics, State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontier Base of Intelligent Optoelectronics and Perception, Fudan University, Shanghai 200438, China
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4
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Wang Z, Zhu H, Zhuang J, Lu Y, Chen Z, Guo W. Recent Advance in Electrochromic Materials and Devices for Display Applications. Chempluschem 2024; 89:e202300770. [PMID: 38236013 DOI: 10.1002/cplu.202300770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/19/2024]
Abstract
Electrochromic devices (ECDs) possess the performance advantages in terms of color adjustability, low power consumption, and visual friendliness, emerging as one of the ideal candidates for energy-efficient smart windows, next-generation displays, and wearable electronics. The optical and electrical characteristics of ECDs can be adjusted by modifying the materials or structure of devices. This review summarizes the recent developments of innovative technologies and key materials of ECDs for display applications, highlighting the key issues and development trends in this area.
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Affiliation(s)
- Zhenyu Wang
- National Innovation Platform for the Fusion of Industry, and Education in Integrated Circuits, Department of Electronic Science, Xiamen University, Xiamen, 361005, China
| | - Hengli Zhu
- National Innovation Platform for the Fusion of Industry, and Education in Integrated Circuits, Department of Electronic Science, Xiamen University, Xiamen, 361005, China
| | | | - Yijun Lu
- National Innovation Platform for the Fusion of Industry, and Education in Integrated Circuits, Department of Electronic Science, Xiamen University, Xiamen, 361005, China
| | - Zhong Chen
- National Innovation Platform for the Fusion of Industry, and Education in Integrated Circuits, Department of Electronic Science, Xiamen University, Xiamen, 361005, China
| | - Weijie Guo
- National Innovation Platform for the Fusion of Industry, and Education in Integrated Circuits, Department of Electronic Science, Xiamen University, Xiamen, 361005, China
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5
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Tan P, Ren D, Han Y. Full-Color-Adjustable Nanophotonic Device Adopting Electrochromic Poly(3,4-ethylenedioxythiophene) Thin Films. ACS APPLIED MATERIALS & INTERFACES 2024; 16:2614-2623. [PMID: 38178791 DOI: 10.1021/acsami.3c14665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Intercalation-based organic polymers that shift their colors during ion insertion and extraction provide a significant basis for existing electrochromic technology. Nevertheless, the complexity of modifying the structure in the skeleton or combining several diverse polymers to produce a full-color range has restricted the practical applications of electrochromic materials. Herein, we demonstrate two configurations of the poly(3,4-ethylenedioxythiophene) (PEDOT) Fabry-Perot (F-P) nanocavity-type electrochromic devices fabricated by spray coating lossless PEDOT on the F-P metasurfaces (Cr/ITO/Ag/Cr), which allows full-color response by simply controlling the thickness of dielectric layer indium tin oxide (ITO). However, the reflected light from the PEDOT F-P nanocavity-type electrode can be modulated by electrically controllable optical absorption of PEDOT. Besides, the subtle brightness regulation could be obtained in our F-P nanocavity electrochromic devices via altering the PEDOT thickness. Overall, our results offer a novel perspective for versatile color control of PEDOT.
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Affiliation(s)
- Peiyu Tan
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Dengfeng Ren
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Yuge Han
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
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Li CA, Ko B, Park KH, Ahn JG, Park T, Lee DJ, Song SH. High-Performance Electrochromic Devices Based on Size-Controlled 2D WO 3 Nanosheets Prepared Using the Intercalation Method. MATERIALS (BASEL, SWITZERLAND) 2023; 17:41. [PMID: 38203897 PMCID: PMC10780075 DOI: 10.3390/ma17010041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024]
Abstract
It is difficult to obtain ultrathin two-dimensional (2D) tungsten trioxide (WO3) nanosheets through direct exfoliation from bulk WO3 in solution due to the strong bonding between interlayers. Herein, WO3 nanosheets with controllable sizes were synthesized via K+ intercalation and the exfoliation of WO3 powder using sonication and temperature. Because of the intercalation and expansion in the interlayer distance, the intercalated WO3 could be successfully exfoliated to produce a large quantity of individual 2D WO3 nanosheets in N-methyl-2-pyrrolidone under sonication. The exfoliated ultrathin WO3 nanosheets exhibited better electrochromic performance in an electrochromic device than WO3 powder and exfoliated WO3 without intercalation. In particular, the prepared small WO3 nanosheets exhibited excellent electrochromic properties with a large optical modulation of 41.78% at 700 nm and fast switching behavior times of 9.2 s for bleaching and 10.5 s for coloring. Furthermore, after 1000 cycles, the small WO3 nanosheets still maintained 86% of their initial performance.
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Affiliation(s)
- Cheng-Ai Li
- Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 32588, Republic of Korea; (C.-A.L.); (B.K.); (K.-H.P.); (J.-G.A.); (T.P.)
| | - Boemjin Ko
- Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 32588, Republic of Korea; (C.-A.L.); (B.K.); (K.-H.P.); (J.-G.A.); (T.P.)
| | - Kwang-Hyun Park
- Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 32588, Republic of Korea; (C.-A.L.); (B.K.); (K.-H.P.); (J.-G.A.); (T.P.)
| | - Jae-Gyu Ahn
- Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 32588, Republic of Korea; (C.-A.L.); (B.K.); (K.-H.P.); (J.-G.A.); (T.P.)
| | - Taeyoung Park
- Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 32588, Republic of Korea; (C.-A.L.); (B.K.); (K.-H.P.); (J.-G.A.); (T.P.)
| | - Dong-Ju Lee
- Department of Advanced Materials Engineering, Chungbuk National University, Chungdae-ro 1, Seowon-gu, Cheongju 28644, Republic of Korea
| | - Sung-Ho Song
- Division of Advanced Materials Engineering, Center for Advanced Powder Materials and Parts, Kongju National University, Cheonan 32588, Republic of Korea; (C.-A.L.); (B.K.); (K.-H.P.); (J.-G.A.); (T.P.)
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Li R, Liang Y, Wei H, Zhang H, Kurilkina S, Peng W. Dynamic Spectral Modulation Enabled by Conductive Polymer-Integrated Plasmonic Nanodisk-Hole Arrays. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 38047552 DOI: 10.1021/acsami.3c10853] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The electrically driven optical performance modulation of the plasmonic nanostructure by conductive polymers provides a prospective technology for miniaturized and integrated active optoelectronic devices. These features of wafer-scale and flexible preparation, a wide spectrum adjustment range, and excellent electric cycling stability are critical to the practical applications of dynamic plasmonic components. Herein, we have demonstrated a large-scale and flexible active plasmonic nanostructure constructed by electrochemically synthesizing nanometric-thickness conductive polymer onto spatially mismatched Au nanodisk-hole (AuND-H) array on the poly(ethylene terephthalate) (PET) substrate, offering low-power electrically driven switching of reflective light in a wide wavelength range of 550-850 nm. The composite structure of the polymer/AuND-H array supports multiple plasmonic resonance modes with strong near-field enhancement and confinement, which provides an excellent dynamic spectral modulation platform. As a result, the PPy/AuND-H array achieves 18.4% reversible switching of spectral intensity at 780 nm and speedy response time, as well as maintains a stable dynamic modulation range at two-potential cycling between -0.6 and 0.1 V after 200 modulation cycles. Compared to the case of the PPy/AuND-H array, the PANI/AuND-H array obtains a more extensive intensity modulation of 25.1% at 750 nm, which is attributed to the significant differences in the extinction coefficient between the oxidized and reduced states of PANI, but its modulation range degrades apparently after 20 cycles driven at applied voltages between -0.1 and 0.8 V. Additionally, the cycling stability could be further improved by reducing the modulation voltage range. Our proposed electromodulated composite structure provides a promising technological proposal for dynamically plasmonic reconfigurable devices.
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Affiliation(s)
- Rui Li
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Yuzhang Liang
- School of Physics, Dalian University of Technology, Dalian 116024, China
- DUT-BSU Joint Institute, Dalian University of Technology, Dalian 116024, China
| | - Haonan Wei
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Hui Zhang
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Svetlana Kurilkina
- Belarusian State University, Minsk 220030, Belarus
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Wei Peng
- School of Physics, Dalian University of Technology, Dalian 116024, China
- DUT-BSU Joint Institute, Dalian University of Technology, Dalian 116024, China
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8
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Chen J, Song G, Cong S, Zhao Z. Resonant-Cavity-Enhanced Electrochromic Materials and Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2300179. [PMID: 36929668 DOI: 10.1002/adma.202300179] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/26/2023] [Indexed: 06/18/2023]
Abstract
With rapid advances in optoelectronics, electrochromic materials and devices have received tremendous attentions from both industry and academia for their strong potentials in wearable and portable electronics, displays/billboards, adaptive camouflage, tunable optics, and intelligent devices, etc. However, conventional electrochromic materials and devices typically present some serious limitations such as undesirable dull colors, and long switching time, hindering their deeper development. Optical resonators have been proven to be the most powerful platform for providing strong optical confinement and controllable lightmatter interactions. They generate locally enhanced electromagnetic near-fields that can convert small refractive index changes in electrochromic materials into high-contrast color variations, enabling multicolor or even panchromatic tuning of electrochromic materials. Here, resonant-cavity-enhanced electrochromic materials and devices, an advanced and emerging trend in electrochromics, are reviewed. In this review, w e will focus on the progress in multicolor electrochromic materials and devices based on different types of optical resonators and their advanced and emerging applications, including multichromatic displays, adaptive visible camouflage, visualized energy storage, and applications of multispectral tunability. Among these topics, principles of optical resonators, related materials/devices and multicolor electrochromic properties are comprehensively discussed and summarized. Finally, the challenges and prospects for resonant-cavity-enhanced electrochromic materials and devices are presented.
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Affiliation(s)
- Jian Chen
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Ge Song
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Shan Cong
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Zhigang Zhao
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230026, China
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
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Jiang C, Ge R, Bian C, Chen L, Wang X, Zheng Y, Xu G, Cai G, Xiao X. Multicolored inorganic electrochromic materials: status, challenge, and prospects. NANOSCALE 2023; 15:15450-15471. [PMID: 37721398 DOI: 10.1039/d3nr03192f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Against the backdrop of advocacy for green and low-carbon development, electrochromism has attracted academic and industrial attention as an intelligent and energy-saving applied technology due to its optical switching behavior and its special principles of operation. Inorganic electrochromic materials, represented by transition metal oxides, are considered candidates for the next generation of large-scale electrochromic applied technologies due to their excellent stability. However, the limited color diversity and low color purity of these materials greatly restrict their development. Starting from the multicolor properties of inorganic electrochromic materials, this review systematically elaborates on recent progress in the aspects of the intrinsic multicolor of electrochromic materials, and structural multicolor based on the interaction between light and microstructure. Finally, the challenges and opportunities of inorganic electrochromic technology in the field of multicolor are discussed.
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Affiliation(s)
- Chengyu Jiang
- School of Energy Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Rui Ge
- School of Energy Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Chenchen Bian
- Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Lirong Chen
- School of Energy Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Xingru Wang
- School of Energy Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Yang Zheng
- School of Energy Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Gang Xu
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Guofa Cai
- Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China.
| | - Xiudi Xiao
- School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
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Ran X, Ren J, Zhang S, Wu Y, Wu S. Multicolor Electrochromic Display and Patterned Device Based on Hollow-SiO 2-Supported WO 3 Photonic Crystals. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41763-41771. [PMID: 37608572 DOI: 10.1021/acsami.3c09956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Electrochromic photonic crystals (PCs) have been intensively studied in the field of display, sensors, and intelligent materials due to their tunable brilliant structural colors. The mostly studied electrochromic PCs are based on the tunable lattice parameter after electrifying; namely, the electrochromic process is caused by the structural change of PCs. Besides the lattice parameter, the refractive index is another key factor to determine the structural color of PCs. Here, a kind of hollow-SiO2-supported WO3 (H-SiO2/WO3) PCs is designed, where the refractive index of the WO3 portion is changeable under charging. Benefiting from the support effect and tunable thickness of H-SiO2, large-area PC samples with good surface morphology and bright multicolor output are prepared. The reflection peaks of these composite PCs can shift by 30-90 nm, and their corresponding colors changed obviously after the voltage was applied. After being pixelated by laser-marking, the H-SiO2/WO3 PCs can dynamically display different numeric and alphabetic patterns in an electric-driven writing and erasing process. Not only does this composite PC structure broaden the color change range of WO3-based materials but also avoids the structural change in the electrochromic process. This work provides more possibilities for electrochromic PCs in the field of color-changing pattern displays.
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Affiliation(s)
- Xiaoxu Ran
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jie Ren
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Shufen Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yue Wu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201, China
| | - Suli Wu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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11
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Han JH, Kim D, Kim J, Kim G, Fischer P, Jeong HH. Plasmonic Nanostructure Engineering with Shadow Growth. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2107917. [PMID: 35332960 DOI: 10.1002/adma.202107917] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Physical shadow growth is a vacuum deposition technique that permits a wide variety of 3D-shaped nanoparticles and structures to be fabricated from a large library of materials. Recent advances in the control of the shadow effect at the nanoscale expand the scope of nanomaterials from spherical nanoparticles to complex 3D shaped hybrid nanoparticles and structures. In particular, plasmonically active nanomaterials can be engineered in their shape and material composition so that they exhibit unique physical and chemical properties. Here, the recent progress in the development of shadow growth techniques to realize hybrid plasmonic nanomaterials is discussed. The review describes how fabrication permits the material response to be engineered and highlights novel functions. Potential fields of application with a focus on photonic devices, biomedical, and chiral spectroscopic applications are discussed.
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Affiliation(s)
- Jang-Hwan Han
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Doeun Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Juhwan Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Gyurin Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Peer Fischer
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Hyeon-Ho Jeong
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
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12
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Li Y, Sun P, Chen J, Zha X, Tang X, Chen Z, Zhang Y, Cong S, Geng F, Zhao Z. Colorful Electrochromic Displays with High Visual Quality Based on Porous Metamaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2300116. [PMID: 36921294 DOI: 10.1002/adma.202300116] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/25/2023] [Indexed: 06/09/2023]
Abstract
The introduction of metamaterials into electrochromic (EC) displays has recently inspired a great breakthrough in the EC field, as this can offer a variety of new attractive features, from a very wide gamut of colors to very fast switching times. However, such metamaterial-based EC displays still face significant constraints when developing from single electrodes to full devices, because other supportive components in devices, such as counter electrodes and electrolytes, significantly affect light propagation and the subsequent perceived color quality in metamaterial-based EC devices. Herein, a new, cost-effective device design structured around a new type of porous metamaterial is reported to circumvent the critical problem in metamaterial-based EC displays. Owing to its unique design, the metamaterial-based EC device achieves good color quality with no drop in brightness or shift in color chromaticity when compared with a single electrode. Moreover, the porous-metamaterial-based EC device can exhibit non-iridescence and be viewed from a wide range of angles (5°-85°) and has fast switching response (2.4 and 2.5 s for coloration and bleaching, respectively), excellent cycling performance (at least 2000 cycles), and extremely low power consumption (4.0 mW cm-2 ).
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Affiliation(s)
- Yaowu Li
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, P. R. China
| | - Peiyan Sun
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Jian Chen
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Xiuling Zha
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, P. R. China
| | - Xueqing Tang
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Zhiwei Chen
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Yanan Zhang
- College of Energy, Soochow University, Suzhou, 215006, P. R. China
| | - Shan Cong
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
- Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials, Jiangxi Institute of Nanotechnology, Nanchang, 330200, P. R. China
| | - Fengxia Geng
- College of Energy, Soochow University, Suzhou, 215006, P. R. China
| | - Zhigang Zhao
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, P. R. China
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13
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Guo Z, Yu G, Zhang Z, Han Y, Guan G, Yang W, Han MY. Intrinsic Optical Properties and Emerging Applications of Gold Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2206700. [PMID: 36620937 DOI: 10.1002/adma.202206700] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 12/21/2022] [Indexed: 06/09/2023]
Abstract
The collective oscillation of free electrons at the nanoscale surface of gold nanostructures is closely modulated by tuning the size, shape/morphology, phase, composition, hybridization, assembly, and nanopatterning, along with the surroundings of the plasmonic surface located at a dielectric interface with air, liquid, and solid. This review first introduces the physical origin of the intrinsic optical properties of gold nanostructures and further summarizes stimuli-responsive changes in optical properties, metal-field-enhanced optical signals, luminescence spectral shaping, chiroptical response, and photogenerated hot carriers. The current success in the landscape of nanoscience and nanotechnology mainly originates from the abundant optical properties of gold nanostructures in the thermodynamically stable face-centered cubic (fcc) phase. It has been further extended by crystal phase engineering to prepare thermodynamically unfavorable phases (e.g., kinetically stable) and heterophases to modulate their intriguing phase-dependent optical properties. A broad range of promising applications, including but not limited to full-color displays, solar energy harvesting, photochemical reactions, optical sensing, and microscopic/biomedical imaging, have fostered parallel research on the multitude of physical effects occurring in gold nanostructures.
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Affiliation(s)
- Zilong Guo
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Guo Yu
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Zhiguo Zhang
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Yandong Han
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Guijian Guan
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Wensheng Yang
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475001, China
| | - Ming-Yong Han
- Institute of Molecular Plus, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
- Institute of Materials Research and Engineering, 2 Fusionopolis Way, Singapore, 138634, Singapore
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14
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Hopmann E, Zhang W, Li H, Elezzabi AY. Advances in electrochromic device technology through the exploitation of nanophotonic and nanoplasmonic effects. NANOPHOTONICS 2023; 12:637-657. [PMID: 36844468 PMCID: PMC9945060 DOI: 10.1515/nanoph-2022-0670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Research regarding electrochromic (EC) materials, such materials that change their color upon application of an electrochemical stimulus, has been conducted for centuries. However, most recently, increasing efforts have been put into developing novel solutions to utilize these on-off switching materials in advanced nanoplasmonic and nanophotonic devices. Due to the significant change in dielectric properties of oxides such as WO3, NiO, Mn2O3 and conducting polymers like PEDOT:PSS and PANI, EC materials have transcended beyond simple smart window applications and are now found in plasmonic devices for full-color displays and enhanced modulation transmission and photonic devices with ultra-high on-off ratios and sensing abilities. Advancements in nanophotonic ECDs have further decreased EC switching speed by several orders of magnitude, allowing integration in real-time measurement and lab-on-chip applications. The EC nature of such nanoscale devices promises low energy consumption with low operating voltages paired with bistability and long lifetimes. We summarize these novel approaches to EC device design, lay out the current short comings and draw a path forward for future utilization.
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Affiliation(s)
- Eric Hopmann
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, ABT6G 2V4, Canada
| | - Wu Zhang
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, ABT6G 2V4, Canada
| | - Haizeng Li
- Optics & Thermal Radiation Research Center, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong266273, China
| | - Abdulhakem Y. Elezzabi
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, ABT6G 2V4, Canada
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15
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Dai C, Wang Z, Shi Y, Li Z, Li Z. Scalable Hydrogel-Based Nanocavities for Switchable Meta-Holography with Dynamic Color Printing. NANO LETTERS 2022; 22:9990-9996. [PMID: 36490382 DOI: 10.1021/acs.nanolett.2c03570] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Devices used for meta-optics display are currently undergoing a revolutionary transition from static to dynamic. Despite various tuning strategy demonstrations such as mechanical, electrical, optical, and thermal tunings, a longstanding challenge for their practical application has been the achievement of a conveniently accessible real-life tuning scheme for realizing versatile functionality dynamics outside the laboratory. In this study, we demonstrate a practical tuning strategy to realize a dynamic color printing with a switchable meta-holography exhibition based on hydrogel-based nanocavities. On the basis of the inflation sensitivity of a hydrogel to humidity alteration, its transmissive color was notably tuned from 450 to 750 nm. More intriguingly, by controlling the sample dry/immersed states in real time, we successfully enabled dual-channel switchable meta-holography. With the advantages of facile architecture, daily stimulus with large-area modulation, and high chromaticity, our proposed hydrogel-based nanocavities provide a promising path toward tunable display/encryption, optical sensors, and next-generation display technology.
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Affiliation(s)
- Chenjie Dai
- Electronic Information School, Wuhan University, Wuhan 430072, China
| | - Zejing Wang
- Electronic Information School, Wuhan University, Wuhan 430072, China
| | - Yangyang Shi
- Electronic Information School, Wuhan University, Wuhan 430072, China
| | - Zhe Li
- Electronic Information School, Wuhan University, Wuhan 430072, China
| | - Zhongyang Li
- Electronic Information School, Wuhan University, Wuhan 430072, China
- Wuhan Institute of Quantum Technology, Wuhan 430206, China
- School of Microelectronics, Wuhan University, Wuhan 430072, China
- Suzhou Institute of Wuhan University, Suzhou 215123, China
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16
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Abstract
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With the rapid development of optoelectronic fields,
electrochromic
(EC) materials and devices have received remarkable attention and
have shown attractive potential for use in emerging wearable and portable
electronics, electronic papers/billboards, see-through displays, and
other new-generation displays, due to the advantages of low power
consumption, easy viewing, flexibility, stretchability, etc. Despite
continuous progress in related fields, determining how to make electrochromics
truly meet the requirements of mature displays (e.g., ideal overall
performance) has been a long-term problem. Therefore, the commercialization
of relevant high-quality products is still in its infancy. In this
review, we will focus on the progress in emerging EC materials and
devices for potential displays, including two mainstream EC display
prototypes (segmented displays and pixel displays) and their commercial
applications. Among these topics, the related materials/devices, EC
performance, construction approaches, and processing techniques are
comprehensively disscussed and reviewed. We also outline the current
barriers with possible solutions and discuss the future of this field.
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Affiliation(s)
- Chang Gu
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Ai-Bo Jia
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Yu-Mo Zhang
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Sean Xiao-An Zhang
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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17
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Abstract
The photochromic coating is a promising smart technology that provides different optical properties in response to daylight variations. The application of photochromic coatings with various colors/shades on window glass is one of the current research approaches for finding better energy saving techniques. The aim of this study was to develop a series of photochromic coatings for window glass and measure the impact of such smart technologies on occupants’ visual comfort. This paper examines the visual performance of building facades that utilize windows with different photochromic-coated glass. The visual performance data of three window types coated with nine different photochromic color shades were considered and compared to determine the best photochromic shades and window types that provide optimum visual metrics for the inside of the building. The results show that compared to no-coating glass, both the Daylight Glare Probability and the Useful Daylight Illuminance could be improved by using multi-color coatings that contain equal or different color proportions for photochromic window glass. From an energy-saving point of view, the results indicate that the windows coated with photochromic materials provide a better alternative to the no-coating window products.
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18
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Moon CW, Kim Y, Hyun JK. Active electrochemical high-contrast gratings as on/off switchable and color tunable pixels. Nat Commun 2022; 13:3391. [PMID: 35697694 PMCID: PMC9192692 DOI: 10.1038/s41467-022-31083-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 06/01/2022] [Indexed: 11/23/2022] Open
Abstract
To be viable for display applications, active structural colors must be electrically tunable, on/off switchable, and reversible. Independently controlling the first two functions, however, is difficult because of causality that ties the real and imaginary parts of the optical constants or changing overlap of fields during structural variations. Here, we demonstrate an active reflective color pixel that encompasses separate mechanisms to achieve both functions reversibly by electrochemically depositing and dissolving Cu inside the dielectric grating slits on a Pt electrode with ΔV < 3 V. Varying the modal interference via Cu occupancy in the slits changes the CIE space coverage by up to ~72% under cross-polarized imaging. In the same pixel, depolarization and absorption by the dissolving porous Cu switches the color off with a maximum contrast of ~97%. Exploiting these results, we demonstrate an active color-switching display and individually addressable on/off pixel matrix that highlights their potential in reflective display applications. Two key display operations, color tuning and on/off switching, are achieved with reflective structural colors by changing the modal interference conditions and absorption via electrochemical control of Cu occupancy inside dielectric grating slits.
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Affiliation(s)
- Cheon Woo Moon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Youngji Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jerome Kartham Hyun
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Republic of Korea.
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19
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Hopmann E, Shahriar BY, Elezzabi AY. On-chip high ion sensitivity electrochromic nanophotonic light modulator. NANOSCALE 2022; 14:6526-6534. [PMID: 35420615 DOI: 10.1039/d2nr00646d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Since the discovery of electrochromism, the prospect of employing various electrochromic materials for smart window glass, variable reflectivity mirrors, and large-area displays has been the main drive for such an intriguing phenomenon. However, with advances in nanofabrication and the emergence of improved electrochromic materials offering reversible large changes in dielectric properties upon electrically induced redox reactions, the application strategies are starting to encompass the field of nanophotonics and nanoplasmonics. Herein, a novel strategy is proposed and demonstrated for offering both ultrahigh light modulation depth and high sensitivity ion detection in a single nanophotonic waveguiding platform. By using WO3 to ionically-drive dynamic light control via modulating the refractive index and the losses within the waveguide at ±1.5 V, ultrahigh optical modulation depth of 106, rapid response speed of <0.56 s, long cyclic life, and very sensitive Na+ ion detection ability in 1 mM-1 M concentration, are achieved within a volume of a few μm3. It is envisioned that our introduction of such a multifunctional electrochromic nanophotonic waveguide platform will stimulate and promote further efforts toward fundamental research on technologically promising on-chip integrated next-generation nanophotonic and nanoplasmonic devices for various niche applications.
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Affiliation(s)
- Eric Hopmann
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 2V4, Canada.
| | - Basem Y Shahriar
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 2V4, Canada.
| | - Abdulhakem Y Elezzabi
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 2V4, Canada.
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20
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Rossi S, Olsson O, Chen S, Shanker R, Banerjee D, Dahlin A, Jonsson MP. Dynamically Tuneable Reflective Structural Coloration with Electroactive Conducting Polymer Nanocavities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2105004. [PMID: 34626028 DOI: 10.1002/adma.202105004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Dynamic control of structural colors across the visible spectrum with high brightness has proven to be a difficult challenge. Here, this is addressed with a tuneable reflective nano-optical cavity that uses an electroactive conducting polymer (poly(thieno[3,4-b]thiophene)) as spacer layer. Electrochemical doping and dedoping of the polymer spacer layer provides reversible tuning of the cavity's structural color throughout the entire visible range and beyond. Furthermore, the cavity provides high peak reflectance that varies only slightly between the reduced and oxidized states of the polymer. The results indicate that the polymer undergoes large reversible thickness changes upon redox tuning, aided by changes in optical properties and low visible absorption. The electroactive cavity concept may find particular use in reflective displays, by opening for tuneable monopixels that eliminate limitations in brightness of traditional subpixel-based systems.
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Affiliation(s)
- Stefano Rossi
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, 60174, Sweden
| | - Oliver Olsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
| | - Shangzhi Chen
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, 60174, Sweden
| | - Ravi Shanker
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, 60174, Sweden
| | - Debashree Banerjee
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, 60174, Sweden
| | - Andreas Dahlin
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
| | - Magnus P Jonsson
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, 60174, Sweden
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21
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Jung C, Kim G, Jeong M, Jang J, Dong Z, Badloe T, Yang JKW, Rho J. Metasurface-Driven Optically Variable Devices. Chem Rev 2021; 121:13013-13050. [PMID: 34491723 DOI: 10.1021/acs.chemrev.1c00294] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Optically variable devices (OVDs) are in tremendous demand as optical indicators against the increasing threat of counterfeiting. Conventional OVDs are exposed to the danger of fraudulent replication with advances in printing technology and widespread copying methods of security features. Metasurfaces, two-dimensional arrays of subwavelength structures known as meta-atoms, have been nominated as a candidate for a new generation of OVDs as they exhibit exceptional behaviors that can provide a more robust solution for optical anti-counterfeiting. Unlike conventional OVDs, metasurface-driven OVDs (mOVDs) can contain multiple optical responses in a single device, making them difficult to reverse engineered. Well-known examples of mOVDs include ultrahigh-resolution structural color printing, various types of holography, and polarization encoding. In this review, we discuss the new generation of mOVDs. The fundamentals of plasmonic and dielectric metasurfaces are presented to explain how the optical responses of metasurfaces can be manipulated. Then, examples of monofunctional, tunable, and multifunctional mOVDs are discussed. We follow up with a discussion of the fabrication methods needed to realize these mOVDs, classified into prototyping and manufacturing techniques. Finally, we provide an outlook and classification of mOVDs with respect to their capacity and security level. We believe this newly proposed concept of OVDs may bring about a new era of optical anticounterfeit technology leveraging the novel concepts of nano-optics and nanotechnology.
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Affiliation(s)
- Chunghwan Jung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Gyeongtae Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Minsu Jeong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Jaehyuck Jang
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Zhaogang Dong
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 138634, Singapore
| | - Trevon Badloe
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Joel K W Yang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 138634, Singapore.,Engineering Product Development, Singapore University of Technology and Design, 487372, Singapore
| | - Junsuk Rho
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.,Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.,POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang 37673, Republic of Korea
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22
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Xiong K, Olsson O, Svirelis J, Palasingh C, Baumberg J, Dahlin A. Video Speed Switching of Plasmonic Structural Colors with High Contrast and Superior Lifetime. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103217. [PMID: 34448507 DOI: 10.1002/adma.202103217] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Reflective displays or "electronic paper" technologies provide a solution to the high energy consumption of emissive displays by simply utilizing ambient light. However, it has proven challenging to develop electronic paper with competitive image quality and video speed capabilities. Here, the first technology that provides video speed switching of structural colors with high contrast over the whole visible is shown. Importantly, this is achieved with a broadband-absorbing polarization-insensitive electrochromic polymer instead of liquid crystals, which makes it possible to maintain high reflectivity. It is shown that promoting electrophoretic ion transport (drift motion) improves the switch speed. In combination with new nanostructures that have high surface curvature, this enables video speed switching (20 ms) at high contrast (50% reflectivity change). A detailed analysis of the optical signal during switching shows that the polaron formation starts to obey first order reaction kinetics in the video speed regime. Additionally, the system still operates at ultralow power consumption during video speed switching (<1 mW cm-2 ) and has negligible power consumption (<1 µW cm-2 ) in bistability mode. Finally, the fast switching increases device lifetime to at least 107 cycles, an order of magnitude more than state-of-the-art.
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Affiliation(s)
- Kunli Xiong
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Oliver Olsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
| | - Justas Svirelis
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
| | - Chonnipa Palasingh
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
| | - Jeremy Baumberg
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Andreas Dahlin
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
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