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Martinez Lopez, V.A. (author), Žindžiūtė, U. (author), Ziar, H. (author), Zeman, M. (author), Isabella, O. (author)Irradiance variability is one of the main challenges for using photovoltaic energy. This variability affects the operation of maximum power point trackers (MPPT) causing energy losses. The logic of the Perturb-and-Observe MPPT algorithm is particularly sensitive to quick irradiance changes. We quantified the existing relation between irradiance...journal article 2022
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Santbergen, R. (author), Vogt, M.R. (author), Mishima, Ryota (author), Hino, Masashi (author), Uzu, Hisashi (author), Adachi, Daisuke (author), Yamamoto, Kenji (author), Zeman, M. (author), Isabella, O. (author)We investigate gentle front side textures for perovskite/silicon tandem solar cells. These textures enhance the absorption of sunlight, yet are sufficiently gentle to allow deposition of an efficient perovskite top cell. We present a tandem solar cell with such gentle texture, fabricated by Kaneka corporation, with an efficiency as high as 28...journal article 2022
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Kadlečíková, Magdaléna (author), Vančo, Ľubomír (author), Breza, Juraj (author), Mikolášek, Miroslav (author), Hušeková, Kristína (author), Fröhlich, Karol (author), Procel Moya, P.A. (author), Zeman, M. (author), Isabella, O. (author)We compared the morphology and Raman response of nanoscale shaped surfaces of Si substrates versus monocrystalline Si. Samples were structured by reactive ion etching, and four of them were covered by a RuO<sub>2</sub>-IrO<sub>2</sub> layer. Raman bands, centred at approx. 520 cm<sup>–1</sup>, belonging to samples processed by etching the Si...journal article 2022
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van Nijen, D.A. (author), Manganiello, P. (author), Zeman, M. (author), Isabella, O. (author)Power electronics traditionally plays a crucial role in conditioning the power of photovoltaic (PV) modules and connecting the systems to the electricity grid. Recently, PV module designs with more sub-module power electronics are gaining increased attention. These designs can offer higher reliability and improved resilience against non...review 2022
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Vogt, M.R. (author), Ruiz Tobon, C.M. (author), Alcañiz Moya, A. (author), Procel Moya, P.A. (author), Blom, Y. (author), Nour El Din, A. (author), Stark, T. (author), Wang, Z. (author), Goma, E. Garcia (author), Etxebarria, J. G. (author), Ziar, H. (author), Zeman, M. (author), Santbergen, R. (author), Isabella, O. (author)We introduce a novel simulation tool capable of calculating the energy yield of a PV system based on its fundamental material properties and using self-consistent models. Thus, our simulation model can operate without measurements of a PV device. It combines wave and ray optics and a dedicated semiconductor simulation to model the...journal article 2022
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Aonuki, S. (author), Yamashita, Yudai (author), Limodio, G. (author), Narita, Shunsuke (author), Takayanagi, Kaori (author), Iwai, Ai (author), Toko, Kaoru (author), Zeman, M. (author), Isabella, O. (author), Suemasu, Takashi (author)We formed phosphorous(P)-ion-implanted n-BaSi<sub>2</sub> films on p-Si(111) substrates and demonstrated solar-cell functionality of the n-BaSi<sub>2</sub>/p-Si heterojunction under AM1.5 illumination. The BaSi<sub>2</sub> films were grown by molecular beam epitaxy, followed by implantation of P ions to the BaSi<sub>2</sub> films using PF<sub...journal article 2022
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Scire, D. (author), Procel Moya, P.A. (author), Gulino, Antonino (author), Isabella, O. (author), Zeman, M. (author), Crupi, Isodiana (author)Ref. [56] was unfortunately wrong, Instead of [56] Corless, R. M.; Gonnet, G. H.; Hare, D. E. G.; Jeffrey, D. J.; Knuth, D. E. On the Lambert W function. Adv. Comput. Math. 1996, 5, 329–359. It should be changed to Biswas, R. K.; Khan, P.; Mukherjee, S.; Mukhopadhyay, A. K.; Ghosh, J.; Muraleedharan, K. Study of short range structure of...journal article 2022
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Chaudhary, A. (author), Hoß, Jan (author), Lossen, Jan (author), Huster, Frank (author), Kopecek, Radovan (author), van Swaaij, R.A.C.M.M. (author), Zeman, M. (author)Passivated contact based on a thin interfacial oxide and a highly doped polysilicon layer has emerged as the next evolutionary step to increase the efficiencies of industrial silicon solar cells. To take maximum advantage from this layer stack, it is vital to limit the losses at the metal polysilicon interface, which can be quantified as...journal article 2022
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Alcañiz Moya, A. (author), Lindfors, Anders V. (author), Zeman, M. (author), Ziar, H. (author), Isabella, O. (author)Machine learning is arising as a major solution for the photovoltaic (PV) power prediction. Despite the abundant literature, the effect of climate on yield predictions using machine learning is unknown. This work aims to find climatic trends by predicting the power of 48 PV systems around the world, equally divided into four climates. An...journal article 2022
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Calcabrini, A. (author), Procel Moya, P.A. (author), Kambhampati, V. (author), Manganiello, P. (author), Muttillo, M. (author), Zeman, M. (author), Isabella, O. (author)The integration of photovoltaic (PV) technology in urban environments poses new challenges for the design of PV modules. In particular, the poor shading tolerance of conventional PV modules strongly limits the energy performance of urban PV systems. In this work, we analyze how interdigitated back-contact solar cells with low-breakdown...journal article 2022
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Ortiz Lizcano, J.C. (author), Calcabrini, A. (author), Santbergen, R. (author), Procel Moya, P.A. (author), Zeman, M. (author), Isabella, O. (author)When integrated into urban environments, photovoltaic (PV) systems usually present operational temperatures that are significantly higher than those shown by rack-mounted systems. High operating temperatures are associated with reduced reliability of PV modules and significantly impact the electrical performance of solar cells. Utilizing the...journal article 2022
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Chen, N. (author), Rudolph, Dominik (author), Peter, Christoph (author), Zeman, M. (author), Isabella, O. (author), Rosen, Yitzchak (author), Grouchko, Michael (author), Shochet, Ofer (author), Mihailetchi, Valentin D. (author)The high usage of silver in industrial solar cells may limit the growth of the solar industry. One solution is to replace Ag with copper. A screen printable Cu paste is used herein to metallize industrial interdigitated back contact (IBC) solar cells. A novel metallization structure is proposed for making solar cells. Cu paste is applied to...journal article 2022
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Cao, L. (author), Procel Moya, P.A. (author), Alcañiz Moya, A. (author), Yan, J. (author), Tichelaar, F.D. (author), Özkol, E. (author), Zhao, Y. (author), Han, C. (author), Yang, G. (author), Yao, Z. (author), Zeman, M. (author), Santbergen, R. (author), Mazzarella, L. (author), Isabella, O. (author)Thin films of transition metal oxides such as molybdenum oxide (MoO<sub>x</sub>) are attractive for application in silicon heterojunction solar cells for their potential to yield large short-circuit current density. However, full control of electrical properties of thin MoO<sub>x</sub> layers must be mastered to obtain an efficient hole...journal article 2022
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Han, C. (author), Yang, G. (author), Procel Moya, P.A. (author), O'Connor, D. (author), Zhao, Y. (author), Gopalakrishnan, Anirudh (author), Zhang, Xiaodan (author), Zeman, M. (author), Mazzarella, L. (author), Isabella, O. (author)Bifacial (BF) copper-plated crystalline silicon solar cell is an attractive topic to concurrently reduce silver consumption and maintain good device performance. However, it is still challenging to realize a high aspect ratio (AR) of the metal fingers. Herein, a new type of hybrid-shaped Cu finger is electromagnetically fabricated in a BF...journal article 2022
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Yang, G. (author), Han, C. (author), Procel Moya, P.A. (author), Zhao, Y. (author), Singh, M. (author), Mazzarella, L. (author), Zeman, M. (author), Isabella, O. (author)Crystalline silicon solar cells with passivating contacts based on doped poly-Si exhibit high optical parasitic losses. Aiming at minimizing these losses, we developed the oxygen-alloyed poly-Si (poly-SiOx) as suitable material for passivating contacts. From passivation point of view, poly-SiOx layers show excellent passivation quality and...journal article 2022
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Han, C. (author), Santbergen, R. (author), van Duffelen, Max (author), Procel Moya, P.A. (author), Zhao, Y. (author), Yang, G. (author), Zhang, Xiaodan (author), Zeman, M. (author), Mazzarella, L. (author), Isabella, O. (author)Reducing indium consumption, which is related to the transparent conductive oxide (TCO) use, is a key challenge for scaling up silicon heterojunction (SHJ) solar cell technology to terawatt level. In this work, we developed bifacial SHJ solar cells with reduced TCO thickness. We present three types of In<sub>2</sub>O<sub>3</sub>-based TCOs,...journal article 2022
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Zhao, Y. (author), Procel Moya, P.A. (author), Smets, A.H.M. (author), Mazzarella, L. (author), Han, C. (author), Yang, G. (author), Cao, L. (author), Yao, Z. (author), Weeber, A.W. (author), Zeman, M. (author), Isabella, O. (author)Excellent surface passivation induced by (i)a-Si:H is critical to achieve high-efficiency silicon heterojunction (SHJ) solar cells. This is key for conventional single-junction cell applications but also for bottom cell application in tandem devices. In this study, we investigated the effects of (i)a-Si:H deposition temperature on passivation...journal article 2022
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Passivation Enhancement of Poly-Si Carrier-Selective Contacts by Applying ALD Al_2O_3 Capping LayersYang, G. (author), Van de Loo, Bas (author), Stodolny, Maciej (author), Limodio, G. (author), Melskens, Jimmy (author), Isabella, O. (author), Weeber, A.W. (author), Zeman, M. (author), Kessels, W. M.M. (author)Hydrogenation of polycrystalline silicon (poly-Si) passivating contacts is crucial for maximizing their passivation performance. This work presents the application of Al2O3 prepared by atomic layer deposition as a hydrogenating capping layer. Several important questions related to this application of Al2O3 are addressed by comparing results...journal article 2021
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Zhou, Y. (author), Verkou, M.H. (author), Zeman, M. (author), Ziar, H. (author), Isabella, O. (author)Photovoltaic (PV) technology is the most promising renewable energy source to be integrated on urban building surfaces. Modeling and simulating urban PV systems pose more challenges than the conventional ones installed in open field due to rich urban morphology. Herein, a comprehensive workflow to estimate urban solar PV potential is...journal article 2021
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Ortiz Lizcano, J.C. (author), Procel Moya, P.A. (author), Calcabrini, A. (author), Yang, G. (author), Ingenito, Andrea (author), Santbergen, R. (author), Zeman, M. (author), Isabella, O. (author)Building Integrated Photovoltaic systems can produce a significant portion of the energy demand of urban areas. Despite their potential, they remain a niche technology that architects and project engineers still find esthetically limited. The dark blue or black color of standard photovoltaic panels is considered inappropriate for restoration...journal article 2021