DataVXACS Applied Materials & InterfacesPaper
journal article·2023-01-25

Self-Powered Dynamic Glazing Based on Nematic Liquid Crystals and Organic Photovoltaic Layers for Smart Window Applications

Sadiara Fall, Jing Wang, Thomas Regrettier, Nicolas Brouckaert, Olzhas A. Ibraikulov, Nicolas Leclerc, Yaochen Lin, Mohammed Ibn Elhaj, Lachezar Komitov, Patrick Lévêque, Yuhan Zhong, Martin Brinkmann, Malgosia Kaczmarek, Thomas Heiser

ACS Applied Materials & Interfaces· Volume 15· Issue 3
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Source abstract

Abstract

Dynamic windows allow monitoring of in-door solar radiation and thus improve user comfort and energy efficiency in buildings and vehicles. Existing technologies are, however, hampered by limitations in switching speed, energy efficiency, user control, or production costs. Here, we introduce a new concept for self-powered switchable glazing that combines a nematic liquid crystal, as an electro-optic active layer, with an organic photovoltaic material. The latter aligns the liquid crystal molecules and generates, under illumination, an electric field that changes the molecular orientation and thereby the device transmittance in the visible and near-infrared region. Small-area devices can be switched from clear to dark in hundreds of milliseconds without an external power supply. The drop in transmittance can be adjusted using a variable resistor and is shown to be reversible and stable for more than 5 h. First solution-processed large-area (15 cm 2 ) devices are presented, and prospects for smart window applications are discussed.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Transition Metal Oxide Nanomaterials · Liquid Crystal Research Advancements · Advanced Materials and Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratoire des Sciences de l’Ingénieur, de l’Informatique et de l’Imagerie (ICube Research Institute), Université de Strasbourg, Centre National de la Recherche Scientifique, 23, Rue du Loess, Strasbourg Cedex 2 67037, France

Voltec Solar, 1 Rue des Prés, Dinsheim-sur-Bruche 67190, France

University of Southampton, Southampton SO17 1BJ, U.K.

Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé, Université de Strasbourg, Centre National de la Recherche Scientifique, 25, Rue Becquerel, Strasbourg Cedex 67085, France

HighVistec GmbH, Benkenstrasse 254C, Witterswil CH 4108, Switzerland

Dept. of Physics, University of Gothenburg, Gothenburg 41296, Sweden

Department of Chemistry, CHRIST (Deemed to be University), Bangalore 560029, India

Institut Charles Sadron, CNRS-UPR 22, 23 Rue du Loess, Strasbourg Cedex 2 67034, France

Funding

Agence Nationale de la Recherche · SATT Conectus

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