Ultra-light asymmetric photovoltaic sandwich structures |
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| Authors: | Julien Rion Yves Leterrier Jan-Anders E Månson Jean-Marie Blairon |
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| Affiliation: | 1. Laboratoire de Technologie des Composites et Polymères (LTC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland;2. Solvay Research and Technology, Rue de Ransbeek 310, Brussels B-1120, Belgium;1. Department of Aerospace Engineering, University of Bristol, Oceans Building, University Walk, Bristol B58 1TR, UK;2. Laboratoire de Mécanique et d’Acoustique 31, ch. Joseph Aiguier, 13402, Marseille, France;1. College of Engineering, Ocean University of China, Qingdao 266100, China;2. Shandong Provincial Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100, China;3. School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia;4. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China;1. Department of Aerospace and System Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University, 900 Gajwa-dong, Jinju, Gyeongnam 660-701, Republic of Korea;2. School of Mechanical Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University, 900 Gajwa-dong, Jinju, Gyeongnam 660-701, Republic of Korea;1. DICEA, Department of Civil, Architectural and Environmental Engineering, via Marzolo 9, University of Padua, 35131 Padova, Italy;2. NAIZIL S.p.A., via Pontarola 9, 35011 Campodarsego, Padova, Italy;1. Fraunhofer Center for Silicon Photovoltaics, Walter-Hülse-Str. 1, 06120 Halle (Saale), Germany;2. Anhalt University of Applied Sciences, Photovoltaic Materials, Bernburger Str. 57, 06366 Köthen (Anhalt), Germany;1. Applied Mechanics, Engineering Technology, University of Twente, Enschede, The Netherlands;2. Production Technology, Engineering Technology, University of Twente, Enschede, The Netherlands |
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| Abstract: | This work evaluated the possibility of using silicon solar cells as load-carrying elements in composite sandwich structures. Such an ultra-light multifunctional structure is a new concept enabling weight, and thus energy, to be saved in high-tech applications such as solar cars, solar planes or satellites. Composite sandwich structures with a weight of ～800 g/m2 were developed, based on one 140 μm thick skin made of 0/90° carbon fiber-reinforced plastic (CFRP), one skin made of 130 μm thick mono-crystalline silicon solar cells, thin stress transfer ribbons between the cells, and a 29 kg/m3 honeycomb core. Particular attention was paid to investigating the strength of the solar cells under bending and tensile loads, and studying the influence of sandwich processing on their failure statistics. Two prototype multi-cell modules were produced to validate the concept. The asymmetric sandwich structure showed balanced mechanical strength; i.e. the solar cells, reinforcing ribbons, and 0/90° CFRP skin were each of comparable strength, thus confirming the potential of this concept for producing stiff and ultra-lightweight solar panels. |
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