Can we make color switchable photovoltaic windows?

Surel, Josephine L.; Christians, Jeffrey A.

doi:10.1039/d3sc01811c

Cited by 6 publications

(1 citation statement)

References 68 publications

(138 reference statements)

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“…[9,10] The intrinsic tunability of electrochemical and optical properties in organic materials presents a promising opportunity for customized performance in various applications such as energy storage, sensors, smart windows, and displays. Smart windows can be electrochromic (EC), [11] thermochromic, [12] photochromic, [13,14] photovoltaic, [15] etc. These chromic materials require activation of the chromogenic group through external stimuli and are widely explored due to their inherent properties and energy-saving features.…”

Section: Introductionmentioning

confidence: 99%

Heterocycle‐ and Amine‐Free Electrochromic and Electrofluorochromic Molecules for Energy‐Saving See‐Through Smart Windows and Displays

Navya,

Ganesan,

Neyts

et al. 2024

Chemistry A European J

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Electrochromic (EC) smart windows are an elegant alternative to dusty curtains, blinds, and traditional dimming devices. The EC energy storage smart windows and displays received remarkable attention in the optoelectronic industry as they hold promise for high energy efficiency, low power consumption, reversibility, and swift response to stimuli. However, achieving these properties remains challenging. Moreover, most EC molecules do not exhibit electrofluorochromism, which is highly essential for smart displays because its EC property can modulate the solar heat entering the building, and its electrofluorochromic (EFC) aspects can create lighting during the night. In this work, a structure‐property relationship is utilized to develop new electrochromes that can store the injected charge, and these molecules indeed exhibit electrofluorochromism. The compounds are synthesized from tetrabenzofluorene with two aromatic acceptor units, and avoids the use of widely studied heterocycles and amine derivatives. The electrochromes switches from yellow to dark hue in solution, solid, and gel state. The compounds display exceptional electrochemical stability and reversibility in 1000 cycles and capacity retention of 93‐100% in 300 charging‐discharging cycles. The proof‐of‐concept device fabrication of the self‐dimming EC smart window presented here demonstrates that it can furnish visual comfort, modulate transmitted light and glare, and reduce energy usage.

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Section: Introductionmentioning

confidence: 99%

Heterocycle‐ and Amine‐Free Electrochromic and Electrofluorochromic Molecules for Energy‐Saving See‐Through Smart Windows and Displays

Navya,

Ganesan,

Neyts

et al. 2024

Chemistry A European J

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Smart Building Material with Near‐Infrared‐Triggered Reversible Color Switching

Liu,

Chen,

Jin

et al. 2024

Adv Eng Mater

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Smart materials and devices play an increasingly important role in improving modern life due to their richer functions, enhanced controllability, and improved biocompatibility. Here, calcium silicate hydration (C‐S‐H) was integrated with layered [Co(NCS)2(pyrazine)2]n metal‐organic frameworks (Co‐MOF) and polymeric skeleton to fabricate the smart building material (M‐C‐S‐H). C‐S‐H was anchored on the polymeric skeleton to reinforce the network structure for enhanced mechanical strength and toughness. Simultaneously, the highly porous skeleton structure enabled the uniform distribution of layered Co‐MOF, which could maintain its molecular form to endow the M‐C‐S‐H with the photoresponsive color‐switching performance. The M‐C‐S‐H as a smart building material exhibited the color change between light blue and black blue upon NIR illumination on/off within a wide temperature range to achieve personalized wall and building decoration. Taking advantage of the low cost, rapid response, outstanding reversibility, and good color stability, M‐C‐S‐H could provide lively, dynamic, changeable decorating effects for walls and buildings.This article is protected by copyright. All rights reserved.

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Smart Photovoltaic Windows for Next‐Generation Energy‐Saving Buildings

Wang,

Na,

et al. 2024

Advanced Science

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The global energy system transforming from fossil fuels to renewable green energy through the adaption of innovative and dynamic green technologies. Energy‐saving buildings (ESBs) are attracting extensive attention as intelligent architectures capable of significantly reducing the energy consumption for heating, air‐conditioning, and lighting. They provide comfortable working and living environment by regulating and harnessing solar energy. Smart photovoltaic windows (SPWs) offer a promising platform for designing ESBs due to their unique feature. They can modulate solar energy based on dynamic color switching behavior under external stimuli and generate electrical power by harvesting solar energy. In this review, the‐state‐of‐art of strategies and technologies are summarized putting SPWs toward high‐efficiency ESBs. The SPWs are systematically categorized according to the working principle and functional component. For each type of SPWs, material and architecture engineering are focused on to optimize operation mode, optical modulation capability, photovoltaic performance and durability for giving ESBs flexible manipulation, extraordinary energy‐saving effect, and high electricity power. In addition, the challenges and opportunities in this cutting‐edge research area are discussed, with the aim of promoting the development of advanced multifunctional SPWs and their application in high efficiency ESBs.

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Can we make color switchable photovoltaic windows?

Abstract: The development of smart windows could enhance the functionality of the large glass facades found in modern buildings around the globe. While these facades offer occupants views and natural light,...

Cited by 6 publications

References 68 publications

Heterocycle‐ and Amine‐Free Electrochromic and Electrofluorochromic Molecules for Energy‐Saving See‐Through Smart Windows and Displays

Heterocycle‐ and Amine‐Free Electrochromic and Electrofluorochromic Molecules for Energy‐Saving See‐Through Smart Windows and Displays

Smart Building Material with Near‐Infrared‐Triggered Reversible Color Switching

Smart Photovoltaic Windows for Next‐Generation Energy‐Saving Buildings

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