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Calcabrini, A. (author), Muttillo, M. (author), Weegink, Raoul (author), Manganiello, P. (author), Zeman, M. (author), Isabella, O. (author)Photovoltaic modules in the urban environment are very often exposed to uneven illumination conditions. The electrical interconnection between solar cells in a photovoltaic module limits the power that a solar module can generate under partial shading conditions. In this article, we introduce a PV module that is able to dynamically reconfigure...journal article 2021
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Chaudhary, A. (author), Hoß, Jan (author), Lossen, Jan (author), van Swaaij, R.A.C.M.M. (author), Zeman, M. (author)We have metallised n+ polysilicon passivated layer structures deposited by Low Pressure Chemical Vapor Deposition (LPCVD) with silver pastes. We analysed recombination at the metal contacts by photoluminescence imaging of metallised lifetime samples and found for the best paste, metal semiconductor recombination current density values (J0met)...conference paper 2021
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Calcabrini, A. (author), Weegink, Raoul (author), Manganiello, P. (author), Zeman, M. (author), Isabella, O. (author)Urban environments present a great potential to generate electricity with photovoltaic technology. However, this electricity cannot be fully harvested using conventional solar modules that have been designed for open landscapes. In urban environments, photovoltaic modules can often be subject to partial shading caused by trees and building...journal article 2021
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Scire, D. (author), Macaluso, Robert (author), Mosca, Mauro (author), Mirabella, S. (author), Gulino, Antonino (author), Isabella, O. (author), Zeman, M. (author), Crupi, I. (author)Thin layers of MoO<sub>x</sub> have been deposited by thermal evaporation followed by post-deposition annealing. The density of states distributions of the MoO<sub>x</sub> films were extracted deconvoluting the absorption spectra, measured by a photothermal deflection spectroscopy setup, including the small polaron contribution. Results...journal article 2021
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Singh, M. (author), Santbergen, R. (author), Syifai, Indra (author), Zeman, M. (author), Isabella, O. (author)Since single junction c-Si solar cells are reaching their practical efficiency limit. Perovskite/c-Si tandem solar cells hold the promise of achieving greater than 30% efficiencies. In this regard, optical simulations can deliver guidelines for reducing the parasitic absorption losses and increasing the photocurrent density of the tandem...journal article 2021
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Yamashita, Yudai (author), Ruiz Tobon, C.M. (author), Santbergen, R. (author), Zeman, M. (author), Isabella, O. (author), Suemasu, Takashi (author)We performed advanced opto-electrical simulations on thin-film BaSi<sub>2</sub> solar cells. First, absorption spectra of BaSi<sub>2</sub>-pn homojunction solar cells on Si substrate were calculated based on flat and/or pyramidally-textured surfaces, wherein 20-nm-thick n<sup>+</sup>-BaSi<sub>2</sub> was the topmost electron transport layer....journal article 2021
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Verkou, M.H. (author), Ahmad, Z. (author), Ziar, H. (author), Isabella, O. (author), Zeman, M. (author)Urban areas rely on the wide implementation of X-Integrated Photovoltaic (X-IPV) systems to provide green electricity for the sustainable electrification. In this research, a modelling framework to accurately predicting their output energy yield and asses their impact on the low voltage distribution grid has been developed. This tool can compute...conference paper 2021
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Zhao, Y. (author), Procel Moya, P.A. (author), Han, C. (author), Mazzarella, L. (author), Yang, G. (author), Weeber, A.W. (author), Zeman, M. (author), Isabella, O. (author)Low activation energy (E<sub>a</sub>) and wide bandgap (E<sub>g</sub>) are essential for (p)-contacts to achieve effective hole collection in silicon heterojunction (SHJ) solar cells. In this work, we study Plasma-Enhanced Chemical Vapor Deposition p-type hydrogenated nanocrystalline silicon oxide, (p)nc-SiO<sub>x</sub>:H, combined with (p)nc...journal article 2021
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Han, C. (author), Zhao, Y. (author), Mazzarella, L. (author), Santbergen, R. (author), Bento Montes, A.R. (author), Procel Moya, P.A. (author), Yang, G. (author), Zhang, Xiaodan (author), Zeman, M. (author), Isabella, O. (author)The window layers limit the performance of silicon heterojunction (SHJ) solar cells with front and back contacts. Here, we optimized tungsten-doped indium oxide (IWO) film deposited by radio frequency magnetron sputtering at room temperature. The opto-electrical properties of the IWO were manipulated when deposited on top of thin-film silicon...journal article 2021
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Zhao, Y. (author), Mazzarella, L. (author), Procel Moya, P.A. (author), Han, C. (author), Tichelaar, F.D. (author), Yang, G. (author), Weeber, A.W. (author), Zeman, M. (author), Isabella, O. (author)Low parasitic absorption and high conductivity enable (n)-type hydrogenated nanocrystalline silicon [(n)nc-Si:H], eventually alloyed with oxygen [(n)nc-SiO<sub>x</sub>:H], to be deployed as window layer in high-efficiency silicon heterojunction (SHJ) solar cells. Besides the appropriate opto-electrical properties of these nanocrystalline...journal article 2021
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Verkou, M.H. (author), Ziar, H. (author), Isabella, O. (author), Zeman, M. (author)The increasing development of photovoltaic (PV) technologies allows for more feasible PV products, that can split the fixed big electrical infrastructure into smaller mobile systems, suitable for future smart buildings. This research, investigates opportunities for interior PV (IPV) products, that harvest indoor ambient light. The outcome is a...conference paper 2020
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Ziar, H. (author), Manganiello, P. (author), Isabella, O. (author), Zeman, M. (author)At present, electrification and digitalization are two significant trends in the energy sector. Large-scale introduction of variable renewable energy sources, energy storage and power-electronics components, all based on direct current (DC), is fundamentally changing the electrical energy system of today that is based on alternating current ...review 2020
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Calcabrini, A. (author), Weegink, Raoul (author), Zeman, M. (author), Isabella, O. (author)Photovoltaic systems in urban environments are usually partially shaded, thus the need for shade tolerant solar panels in the urban environment. We present the design of a series-parallel reconfigurable photovoltaic module. Given a specific irradiance distribution on its surface, it can change the interconnections between its solar cells to...conference paper 2020
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Limodio, G. (author), Yang, G. (author), De Groot, Yvar (author), Procel, Paul (author), Mazzarella, L. (author), Weber, Arthur W. (author), Isabella, O. (author), Zeman, M. (author)In this work, we develop SiO<sub>x</sub>/poly-Si carrier-selective contacts grown by low-pressure chemical vapor deposition and boron or phosphorus doped by ion implantation. We investigate their passivation properties on symmetric structures while varying the thickness of poly-Si in a wide range (20-250 nm). Dose and energy of implantation...journal article 2020
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Narayan, N.S. (author), Vega Garita, V.E. (author), Qin, Z. (author), Popovic-Gerber, Jelena (author), Bauer, P. (author), Zeman, M. (author)Nearly 840 million people still lack access to electricity, while over a billion more have an unreliable electricity connection. In this article, the three different electrification pathways-grid extension, centralized microgrids, and standalone solar-based solutions, such as pico-solar and solar home systems (SHS)-are critically examined...journal article 2020
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Bento Montes, A.R. (author), Eijt, S.W.H. (author), Tian, Y. (author), Gram, R. (author), Schut, H. (author), Suemasu, T. (author), Usami, N. (author), Zeman, M. (author), Serra, J. (author), Isabella, O. (author)Barium di-silicide (BaSi<sub>2</sub>) is a very promising absorber material for high-efficiency thin-film solar cells, due to its suitable bandgap, high light absorption coefficient, and long minority-carrier lifetime. In this study, we compare the nanostructure, layer composition, and point defects of BaSi<sub>2</sub> thin films deposited by...journal article 2020
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Singh, M. (author), Santbergen, R. (author), Mazzarella, L. (author), Madrampazakis, A. (author), Yang, G. (author), Vismara, R. (author), Remes, Z. (author), Weeber, A.W. (author), Zeman, M. (author), Isabella, O. (author)The optical modelling for optimizing high-efficiency c-Si solar cells endowed with poly-SiO<sub>x</sub> or poly-SiC<sub>x</sub> carrier-selective passivating contacts (CSPCs) demands a thorough understanding of their optical properties, especially their absorption coefficient. Due to the mixed phase nature of these CSPCs, spectroscopic...journal article 2020
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Rezaei, N. (author), Procel Moya, P.A. (author), Simor, Marcel (author), Vroon, Zeger (author), Zeman, M. (author), Isabella, O. (author)An interdigitated back-contacted (IBC) configuration is proposed for submicron copper indium gallium (di)selenide (CIGS). In a modelling platform, the structure was opto-electrically optimized for maximum efficiency. The results are compared with a reference front/back-contacted (FBC) solar cell with similar absorber thickness and exhibiting...journal article 2020
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Tian, Y. (author), Bento Montes, A.R. (author), Vančo, Ľubomír (author), Čaplovičová, Mária (author), Vogrinčič, Peter (author), Šutta, Pavol (author), Satrapinskyy, Leonid (author), Zeman, M. (author), Isabella, O. (author)The knowledge of the structural and compositional details of Si/BaSi<sub>2</sub>/Si heterostructure annealed at high temperature is a prerequisite for BaSi<sub>2</sub> application in heterojunction thin-film solar cells. For this purpose, Si/BaSi<sub>2</sub>/Si heterostructures deposited by magnetron sputtering with different Si layer...journal article 2020
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de Vries, Tim N.C. (author), Bronkhorst, Joris (author), Vermeer, Martijn (author), Donker, Jaap C.B. (author), Briels, Sven A. (author), Ziar, H. (author), Zeman, M. (author), Isabella, O. (author)A quick-scan yield prediction method has been developed to assess rooftop photovoltaic (PV) potential. The method has three main parts. For each roof, first (i) virtual 3D roof segments were reconstructed using aerial imagery, then, (ii) PV modules were automatically fitted onto roof segments using a fitting algorithm and finally, (iii) expected...journal article 2020