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Ahmadpanahi, S.H. (author), El Gawhary, O. (author), Vismara, R. (author), Isabella, O. (author), Zeman, M. (author)Periodic texturing is one of the main techniques to enhance light absorption in thin-film solar cells. The presence of periodicity, such as grating, allows the excitation of guided modes in the structure, thus enhancing absorption. However, grating efficiency in exciting guided modes is highly dependent on the wavelength and incident angle of...journal article 2019
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Ahmadpanahi, S.H. (author), Vismara, R. (author), Isabella, O. (author), Zeman, M. (author)Surface texturing is one of the main techniques to enhance light absorption in solar cells. In thin film devices, periodic texturing can be used to excite the guided resonances supported by the structure. Therefore, total absorption is enhanced largely due to the excitation of these resonances. Although the maximum absorption enhancement...journal article 2019
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Vismara, R. (author), Länk, Nils Odebo (author), Verre, Ruggero (author), Käll, Mikael (author), Isabella, O. (author), Zeman, M. (author)The high-index all-dielectric nanoantenna system is a platform recently used for multiple applications, from metalenses to light management. These systems usually exhibit low absorption/scattering ratios and are not efficient photon harvesters. Nevertheless, by exploiting far-field interference, all-dielectric nanostructures can be engineered...journal article 2019
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Procel Moya, P.A. (author), Yang, G. (author), Isabella, O. (author), Zeman, M. (author)This paper presents an analysis of physical mechanisms related to operation and optimization of interdigitated back contact (IBC) poly-silicon-based devices. Concepts of carrier selectivity and tunneling are used to identify the parameters that impact on the fill factor. Then, based on technology computer-aided design (TCAD) numerical...journal article 2019
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Hou, Fuhua (author), Han, C. (author), Isabella, O. (author), Yan, Lingling (author), Shi, Biao (author), Chen, Junfan (author), An, Sichong (author), Zeman, M. (author)Perovskite/silicon tandem solar cells (TSCs) have the potential to achieve power conversion efficiency exceeding 30%. To be compatible with high-efficiency solution-deposited perovskite top cell, a planar front surface for silicon bottom cell is generally required. However, flat front surfaces result in large light reflection losses and thus...journal article 2019
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Özkol, E. (author), Procel Moya, P.A. (author), Zhao, Y. (author), Mazzarella, L. (author), Medlin, Rostislav (author), Šutta, Pavol (author), Isabella, O. (author), Zeman, M. (author)Solar cells based on black silicon (b-Si) are proven to be promising in photovoltaics (PVs) by exceeding 22% efficiency. To reach high efficiencies with b-Si surfaces, the most crucial step is the effective surface passivation. Up to now, the highest effective minority carrier lifetimes are achieved with atomic layer-deposited Al<sub>2</sub>O...journal article 2019
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Limodio, G. (author), D'Herouville, G. (author), Mazzarella, L. (author), Zhao, Y. (author), Yang, G. (author), Isabella, O. (author), Zeman, M. (author)This work shows an alternative surface cleaning method for c-Si wafers to replace the standard chemical procedures as RCA or HNO <sub>3</sub> which involve hazardous chemicals or unstable processes. The method consists in a high-temperature oxidation treatment (HTO) performed in a classical tube furnace that incorporates organic and metal...journal article 2019
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Han, C. (author), Mazzarella, L. (author), Zhao, Y. (author), Yang, G. (author), Procel Moya, P.A. (author), Tijssen, M. (author), Bento Montes, A.R. (author), Isabella, O. (author), Zeman, M. (author)Broadband transparent conductive oxide layers with high electron mobility (μ<sub>e</sub>) are essential to further enhance crystalline silicon (c-Si) solar cell performances. Although metallic cation-doped In<sub>2</sub>O<sub>3</sub> thin films with high μ<sub>e</sub> (>60 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup>) have been extensively...journal article 2019
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Nepal, Pramod (author), Korevaar, Marc (author), Ziar, H. (author), Isabella, O. (author), Zeman, M. (author)The deposition of dust, soil, and microfibers resulting from the surroundings, as well as the growth of minute pollens like moss and fungi, contributes toward photovoltaic (PV) module soiling. Soiling is a widely recognized factor that significantly reduces the power production by acting as a barrier for effective light absorption by the...journal article 2019
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Vismara, R. (author), Isabella, O. (author), Ingenito, A. (author), Si, F.T. (author), Zeman, M. (author)Background: Elongated nanostructures, such as nanowires, have attracted significant attention for application in silicon-based solar cells. The high aspect ratio and characteristic radial junction configuration can lead to higher device performance, by increasing light absorption and, at the same time, improving the collection efficiency of...journal article 2019
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Calcabrini, A. (author), Ziar, H. (author), Isabella, O. (author), Zeman, M. (author)Architects, engineers and urban planners have today at their disposal several tools for simulating the energy yield of photovoltaic systems. These tools are based on mathematical models that perform repetitive calculations to determine the annual irradiation received by solar panels; hence when photovoltaic systems are installed in complex...journal article 2019
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Limodio, G. (author), Yang, G. (author), Ge, H. (author), Procel Moya, P.A. (author), de Groot, Y. (author), Mazzarella, L. (author), Isabella, O. (author), Zeman, M. (author)In this work we develop a rear emitter silicon solar cell integrating carrier-selective passivating contacts (CSPCs) with different thermal budget in the same device. The solar cell consists of a B-doped poly-Si/SiO<sub>x</sub> hole collector and an i/n hydrogenated amorphous silicon (a-Si:H) stack acting as electron collector placed on the...journal article 2019
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Sönmez, Furkan Fatih (author), Ziar, H. (author), Isabella, O. (author), Zeman, M. (author)The concept of view factor has various applications in engineering problems, ranging from heat management to bifacial photovoltaics. Analytical solutions for view factor calculations are difficult to obtain and normally numerical methods are used. For complex geometries, when several surfaces are arbitrarily arranged in a threedimensional...journal article 2019
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Shekhar, A. (author), Kumaravel, Vinod Kumar (author), Klerks, Stan (author), de Wit, Sten (author), Prasanth, V. (author), Narayan, N.S. (author), Bauer, P. (author), Isabella, O. (author), Zeman, M. (author)Solar road technology provides an opportunity to harvest the vast, albeit dispersed, photovoltaic (PV) energy, while maximizing the land utilization. Deriving experience from the pioneering 70-m solar bike path installed in the Netherlands, this paper highlights the operational challenges and performance parameters using the first-year...journal article 2018
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Yang, G. (author), Guo, Peiqing (author), Procel Moya, P.A. (author), Weeber, A.W. (author), Isabella, O. (author), Zeman, M. (author)The poly-Si carrier-selective passivating contacts (CSPCs) parasitically absorb a substantial amount of light, especially in the form of free carrier absorption. To minimize these losses, we developed CSPCs based on oxygen-alloyed poly-Si (poly-SiO<sub>x</sub>) and deployed them in c-Si solar cells. Transmission electron microscopy analysis...journal article 2018
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Perez Rodriguez, P. (author), Cardenas-Morcoso, Drialys (author), Digdaya, I.A. (author), Mangel Raventos, A. (author), Procel Moya, P.A. (author), Isabella, O. (author), Gimenez, Sixto (author), Zeman, M. (author), Smith, W.A. (author), Smets, A.H.M. (author)Amorphous silicon carbide (a-SiC:H) is a promising material for photoelectrochemical water splitting owing to its relatively small band-gap energy and high chemical and optoelectrical stability. This work studies the interplay between charge-carrier separation and collection, and their injection into the electrolyte, when modifying the...journal article 2018
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Tian, Y. (author), Vismara, R. (author), van Doorene, S. (author), Šutta, Pavol (author), Vančo, L’ubomír (author), Veselý, Marian (author), Vogrinčič, Peter (author), Isabella, O. (author), Zeman, M. (author)Barium disilicide (BaSi2) has been regarded as a promising absorber material for high-efficiency thin-film solar cells. However, it has confronted issues related to material synthesis and quality control. Here, we fabricate BaSi2 thin films via an industrially applicable sputtering process and uncovered the mechanism of structure transformation....journal article 2018
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Procel Moya, P.A. (author), Yang, G. (author), Isabella, O. (author), Zeman, M. (author)In this work we present a theoretical analysis of charge carriers transport mechanisms in IBC-SHJ solar cells. The concepts of contact and transport selectivity are correlated through the band bending at c-Si interface and are used to identify thin-film silicon parameters affecting fill factor (FF) and open-circuit voltage (V<sub>OC</sub>)....journal article 2018
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Gao, Y. (author), Dong, J. (author), Isabella, O. (author), Santbergen, R. (author), Tan, H. (author), Zeman, M. (author), Zhang, Kouchi (author)Vertical space bears great potential of solar energy especially for congested urban areas, where photovoltaic (PV) windows in high-rise buildings can contribute to both power generation and daylight harvest. Previous studies on sun-tracking PV windows strayed into the trade-off between tracking performance and mutual shading, failing to achieve...journal article 2018
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Yang, G. (author), Guo, Peiqing (author), Procel Moya, P.A. (author), Limodio, G. (author), Weeber, A.W. (author), Isabella, O. (author), Zeman, M. (author)In this work, we present the application of poly-Si carrier-selective passivating contacts (CSPCs) as both polarities in interdigitated back-contacted (IBC) solar cell architectures. We compared two approaches to form a gap between the back-surface field (BSF) and emitter fingers. It is proved that the gaps prepared by both approaches are...journal article 2018