Dual Thermal-/Electrical-Responsive Luminescent ‘Smart’ Window

Timmermans, Gilles H.; Douma, Robin F.; Lin, Jianbin; Debije, Michael G.

doi:10.3390/app10041421

Cited by 7 publications

(2 citation statements)

References 31 publications

(37 reference statements)

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“…LSC-PV devices have shown relative insensitivity to the incidence direction of illumination, which often is a challenge for conventional PV modules [9]. Combined with other attractive features including color tunability [10], transparency, geometry flexibility, configuration versatility, and electrical interconnection invisibility [7], [11], [12], LSC-PV devices or modules could be seamlessly integrated into the urban built environment by means of building integrated PV or as smart windows for controlling the light entering room spaces [13]- [16].…”

Section: Introductionmentioning

confidence: 99%

Simulations of Luminescent Solar Concentrator Bifacial Photovoltaic Mosaic Devices Containing Four Different Organic Luminophores

Aghaei

Zhu

Debije

et al. 2022

IEEE J. Photovoltaics

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In this article, various design configurations of luminescent solar concentrator photovoltaic (LSC-PV) devices have been simulated using Monte Carlo raytracing. These LSC PV devices are composed of mono-crystalline silicon solar cells and cubical poly (methyl methacrylate) lightguides, each containing one of the following dyes: Lumogen F Red 305, Lumogen F Orange 240, Perylene Green, or Perylene-diimide di-tert-butylphenyl, which results in different device colors. In these devices, mono-crystalline silicon bifacial PV cell are placed in between the vertical edge(s) of neighboring cubical lightguides whereas monofacial PV cells are positioned at the bottom of a lightguide. Each device is made out of five cubical 10 × 10 × 10 mm 3 lightguides, meaning that the PV cells measure 10 × 10 mm 2 . The main research goal of this article is to evaluate the optical and electrical performance of five of such configured LSC-PV devices. Hence, the spectral distribution of irradiance received by the edges and bottom of the devices has been simulated as well as the optical efficiency of these surfaces and the power conversion efficiency of each device. The theoretical results for power conversion efficiency are in the range of 13.3% to 18% under irradiance of 1000 W/m 2 and depend on the dyes applied. Hence, this article demonstrates the potential for energy generation by these colorful LSC-PV technologies, which we have called Mosaic devices.

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Section: Introductionmentioning

confidence: 99%

Simulations of Luminescent Solar Concentrator Bifacial Photovoltaic Mosaic Devices Containing Four Different Organic Luminophores

Aghaei

Zhu

Debije

et al. 2022

IEEE J. Photovoltaics

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“…The simulations indicated that such system is capable of achieving an optical efficiency of 43% and can provide 9.1% of the electricity demand of the building. Timmermans et al [29] studied the performance of the smart window created from the LSC using two types of dye tested at different temperatures. At 25 • C, the LSC obtained a maximum electrical efficiency of 3%.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the RACPC Performance under Diffuse Radiation for Use in BIPV System

et al. 2020

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In the last four decades there has been a significant increase in solar photovoltaic (PV) capacity, which makes solar one of the most promising renewable energy sources. Following this trend, solar power would become the world’s largest source of electricity by 2050. Building Integrated Photovoltaic (BIPV) systems, in which conventional materials can be replaced with PV panels that become an integral part of the building, can be enhanced with concentrating photovoltaic (CPV) systems. In order to increase the cost efficiency of a BIPV system, an optical concentrator can be used to replace expensive PV material with a lower cost option, whilst increasing the electrical output through the concentration of solar power. A concentrator called rotationally asymmetrical compound parabolic concentrator (RACPC) was analysed in this work under diffuse light conditions. Software simulations and experimental work were carried out to determine the optical concentration gain of the concentrator. Results from this work show that, under diffuse light, the RACPC has an optical concentration gain of 2.12. The experimental work showed a value of 2.20, which confirms the results with only a 3.8% difference.

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Switchable gas permeability of a polypropylene‐liquid crystalline composite film

Houben

Kloos

Borneman

et al. 2021

Journal of Polymer Science

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The development of functionalized polyolefins for use as stimuli‐responsive commodity polymers has recently received much attention. In this work, a microporous polypropylene (PP) scaffold is used to align and fortify a smectic liquid crystalline network (LCN) which can switch its gas permeability upon pH changes. The LCN is a photopolymerized liquid crystalline mixture of a dimerized benzoic acid derivative monoacrylate and a diacrylate crosslinker. In the hydrogen‐bonded state, the composite membrane shows a high‐molecular order and a low permeability for He, N2, and CO2 gases. By pH switching from the hydrogen‐bonded state to the salt form, the molecular order is reduced, and the gas permeability is increased by one order of magnitude. This increase is mainly attributed to a loss in order of the system, increasing the free volume, resulting in an increased diffusibility. By exposing the composite film to basic or acidic environments, reversible switching between low and high gas permeability states is observed, respectively. The physical constraints imposed by the PP scaffold strengthens the membrane while the reversible switching inside the liquid crystalline polymer is maintained. This switching of gas permeation properties is not possible with the fragile freestanding LCN films alone.

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Dual Thermal-/Electrical-Responsive Luminescent ‘Smart’ Window

Cited by 7 publications

References 31 publications

Simulations of Luminescent Solar Concentrator Bifacial Photovoltaic Mosaic Devices Containing Four Different Organic Luminophores

Simulations of Luminescent Solar Concentrator Bifacial Photovoltaic Mosaic Devices Containing Four Different Organic Luminophores

Assessment of the RACPC Performance under Diffuse Radiation for Use in BIPV System

Switchable gas permeability of a polypropylene‐liquid crystalline composite film

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