Switchable Holographic Device Based on Reversible Electrodeposition

Cho, Seong M.; Kim, Su-Jung; Kim, Min Su; Hwang, Chi‐Young; Kim, Tae-Youb; Cheon, Sang-Hoon; Kim, Joo Yeon; Ah, Chil Seong; Song, Juhee; Ryu, Hojun; Hwang, Chi‐Sun; Lee, Jeong Ik

doi:10.1002/admt.201800478

Cited by 5 publications

(3 citation statements)

References 40 publications

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“…Required heat dissipation of different display technologies (WO3-based multilayered film 14 , WO3-based metamaterial 39 , conventional RMED devices 17,40,43,44 , dynamic photonic crystal 41,45,46 , liquid crystal 42 , and our DCMRCs) in the summer of Shanghai.…”

Section: Fig 5 Energy-saving Performance Of Cooled Display Based On D...mentioning

confidence: 99%

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Making color display cool: An electrochemical self-cooled dynamic structural color device

Wang,

Jin,

et al. 2024

Preprint

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Electrochromic (EC) materials can dynamically manipulate transport of light and thermal radiation under the electric field, which are promising for applications such as smart windows and energy-saving display devices. The color switching mechanism in EC materials is mainly based on optical absorption, resulting in excessive solar thermal load when used outdoors. Although daytime radiative cooling (DRC) provides a possible solution for energy-efficient heat dissipation for these outdoor devices, it often leads to a white appearance incompatible with EC color displays. To address this challenge, we develop novel display devices that can simultaneously realize color switching and DRC, enabled by reconfigurable, high-quality optical nanocavities based on reversible metal electrodeposition. These devices can not only achieve sub-ambient cooling of 2.6 ~ 5.3 ℃ under direct sunlight but also exhibit multiplexed adaptive displays with diverse colors, high stability, and long cycle life. Based on worldwide building-level energy simulations, we show this novel display can potentially save electrical energy consumption of 0.8–23.1 kWh/m2 compared to conventional LED displays, providing a new paradigm of passively cooled dynamic color display.

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Section: Fig 5 Energy-saving Performance Of Cooled Display Based On D...mentioning

confidence: 99%

“…There are not yet EC devices that can realize reversible color-changing while preserving high solar reflection. 14,17,[39][40][41][42][43][44][45][46][47][48][49] .…”

Section: Introductionmentioning

confidence: 99%

Making color display cool: An electrochemical self-cooled dynamic structural color device

Wang,

Jin,

et al. 2024

Preprint

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“…By utilizing reversible electrodeposition technology, an electrically switchable holographic device has been realized with submicron-sized pitch. 165 A conductive metal can be deposited and erased reversibly on the surface of the electrode layer with the applied voltage. Without the deposition of silver, the device acts as a mirror because incident light is reflected by the aluminum mirror layer.…”

Section: Metasurfaces For Tunable Hologramsmentioning

confidence: 99%

Metasurface-empowered spectral and spatial light modulation for disruptive holographic displays

Kim

et al. 2022

Nanoscale

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Bistable Silver Electrodeposition‐Based Electrochromic Device with Reversible Three‐State Optical Transformation By Using WO₃ Nanoislands Modified ITO Electrode

Yin

Zhu

et al. 2022

Adv Materials Inter

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properties when the ions are interspersed. However, most EC devices based on these nonmetal materials can only obtain the transformation between two colors and cannot achieve the reflective mirror optical state. The second exploits reversible electrodeposition by depositing and dissolving metal (Ag, Bi, Cu, Ni, Pb, and others) onto a transparent conducting substrate to modulate its optical properties. [1,2,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] For the electrodeposition-based EC systems, the device structures mainly consist of two opposite transparent electrodes with an electrolyte in-between. The metal dissolved in the electrolyte will be deposited on the electrode surface when voltage is applied to the electrodes. In turn, the deposited metal will be dissolved into the electrolyte again when the power turned off. By this means, the EC device can change its transmittance and reflectance reversibly.In electrodeposition-based EC devices, the difficulty of coating deposition and dissolution determines the reversibility and response speed of optical changes. In this category, Ag-Cu deposition devices have been the most extensively studied. [8,13,33,[52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] Compared with that produced by Ag alone, Cu can promote reversibility and make the codeposition pattern flatter. For example, Araki et al. have developed a novel reversible metal deposition device with three optical state by introducing indium tin oxide (ITO) particles on a flat indium thin oxide electrode. [52] Onodera et al. prepared glare tunable EC device exhibiting reversible optical transformation between transparent, mirror and black states originating from rough and smooth indium-tin oxide films, deposited by spray pyrolysis chemical vapor deposition and without any treatment. [8] Jeong et al. proposed an effective approach to enhance the optical properties of the EC device by using the 3D hierarchical ITO branches, which was due to the localized surface plasmon resonance. [61] However, due to some key issues such as a lack of bistability in reflection/transmission and poor stability of the mirror/black state, none has been widely available. Thus, there are still very important challenges in developing silver electrodeposition-based EC device with long memory effects to maintain the mirror/black states without power supply. As stated clearly in the literature, the poor bistability of such EC devices is mainly due to the oxidation of metallic silver to soluble AgBr n (1−n) then to Ag( I ). [67,68] Cu ions A bistable electrochromic (EC) device which can reversibly transform between transparent, mirror, and black states based on reversible metal Ag electrodeposition is achieved by introducing 1) a (3-mercaptopropyl) trimethoxysilane (MPTMS)-treated indium-tin-oxide (ITO) glass electrode modified with WO 3 nanoislands (WNs) as the rough surface and 2) ionic liquids (IL) into electrolyte to form an anion-blocking layer, toward achieving long-term memory performance. ...

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Switchable Holographic Device Based on Reversible Electrodeposition

Cited by 5 publications

References 40 publications

Making color display cool: An electrochemical self-cooled dynamic structural color device

Making color display cool: An electrochemical self-cooled dynamic structural color device

Metasurface-empowered spectral and spatial light modulation for disruptive holographic displays

Bistable Silver Electrodeposition‐Based Electrochromic Device with Reversible Three‐State Optical Transformation By Using WO₃ Nanoislands Modified ITO Electrode

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Switchable Holographic Device Based on Reversible Electrodeposition

Cited by 5 publications

References 40 publications

Making color display cool: An electrochemical self-cooled dynamic structural color device

Making color display cool: An electrochemical self-cooled dynamic structural color device

Metasurface-empowered spectral and spatial light modulation for disruptive holographic displays

Bistable Silver Electrodeposition‐Based Electrochromic Device with Reversible Three‐State Optical Transformation By Using WO3 Nanoislands Modified ITO Electrode

Contact Info

Product

Resources

About

Bistable Silver Electrodeposition‐Based Electrochromic Device with Reversible Three‐State Optical Transformation By Using WO₃ Nanoislands Modified ITO Electrode