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Singh, M. (author), Datta, K. (author), Amarnath, A. (author), Wagner, F. (author), Zhao, Y. (author), Yang, G. (author), Bracesco, A. (author), Phung, N. (author), Zhang, D. (author), Zardetto, V. (author), Najafi, M. (author), Veenstra, S.C. (author), Coletti, G. (author), Mazzarella, L. (author), Creatore, M. (author), Wienk, M.M. (author), Janssen, R.A.J. (author), Weeber, A.W. (author), Zeman, M. (author), Isabella, O. (author)Single junction crystalline silicon (c-Si) solar cells are reaching their practical efficiency limit whereas perovskite/c-Si tandem solar cells have achieved efficiencies above the theoretical limit of single junction c-Si solar cells. Next to low-thermal budget silicon heterojunction architecture, high-thermal budget carrier-selective...article 2023
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Qiu W., (author), Apergi, S. (author), Singh, S. (author), Marchezi, P. (author), Song, W. (author), Sternemann, C. (author), Elkhouly, K. (author), Zhang, D. (author), Aguirre, A. (author), Merckx, T. (author), Krishna, A. (author), Shi, Y. (author), Bracesco, A. (author), van Helvoirt, C. (author), Bens, F. (author), Zardetto, V. (author), D’Haen, J. (author), Yu, A. (author), Brocks, G. (author), Aernouts, T. (author), Moons, E. (author), Tao, S. (author), Zhan Y., (author), Kuang, Y. (author), Poortmans, J. (author)The inverted p-i-n perovskite solar cells hold high promise for scale-up toward commercialization. However, the interfaces between the perovskite and the charge transport layers contribute to major power conversion efficiency (PCE) loss and instability. Here, we use a single material of 2-thiopheneethylammonium chloride (TEACl) to molecularly...article 2023
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Najafi M., (author), Theelen, M. (author), Fledderus, H. (author), Zhang, D. (author), Zardetto, V. (author), van Aken, B. (author), Veenstra, S. (author)Semitransparent perovskite solar cells (ST-PSCs) are very attractive due to their potential applications in single junctions for building-integrated photovoltaics (BIPV) and in tandem PV technology using low-bandgap bottom solar cells. Despite the high efficiency achieved, the ST-PSCs still suffer low bifaciality, which can limit their overall...article 2022
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Datta, K. (author), Wang, J. (author), Zhang, D. (author), Zardetto, V. (author), Remmerswaal, W.H.M. (author), Weijtens, C.H.L. (author), Wienk, M.M. (author), Janssen, R.A.J. (author)Perovskite-based multijunction solar cells are a potentially cost-effective technology that can help surpass the efficiency limits of single-junction devices. However, both mixed-halide wide-bandgap perovskites and lead-tin narrow-bandgap perovskites suffer from non-radiative recombination due to the formation of bulk traps and interfacial...article 2022
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Tulus, (author), Muscarella, L.A. (author), Galagan, Y. (author), Boehme, S.C. (author), von Hauff, E. (author)In this study, we quantify the impact of C60-passivation layers in Cs0.15FA0.85PbI2.75Br0.25 double-cation perovskite solar cells. We apply a combination of impedance spectroscopy, photoluminescence (PL) spectroscopy, and X-ray diffraction (XRD) to identify the origin for the increase in power conversion efficiencies and operational stability...article 2022
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Datta, K. (author), Branco, B. (author), Zhao, Y. (author), Zardetto, V. (author), Phung, N. (author), Bracesco, A. (author), Mazzarella, L. (author), Wienk, M.M. (author), Creatore, M. (author), Isabella, O. (author), Janssen, R.A.J. (author)Solar-assisted water electrolysis is a promising technology for storing the energy of incident solar irradiation into hydrogen as a fuel. Here, an integrated continuous flow electrochemical reactor coupled to a monolithic perovskite-silicon tandem solar cell is demonstrated that provides light-driven electrochemical solar-to-hydrogen conversion...article 2022
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Lucarelli, G. (author), de Rossi, F. (author), Taheri, B. (author), Brown, T.M. (author), Brunetti, F. (author)Flexible perovskite solar cells (PSC) represent a viable technology for applications requiring high power-to-weight ratios, seamless integration onto a variety of shapes, and low embedded energy. Strategies to boost the performance of flexible PSC, which still lag behind their rigid counterparts, include passivation of the perovskite surface...article 2022
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Deumel, S. (author), van Breemen, A.J.J.M. (author), Peeters, B. (author), Maas, J. (author), Akkerman, H.B. (author), Meulenkamp, E.A. (author), Gelinck, G.H. (author), Huerdler, J.E. (author), Schmidt, O. (author), Heiss, W. (author), Tedde, S.F. (author)Future medical X-ray imaging will benefit from advances in computing power and artificial intelligence as well as improvements in the X-ray detector performance itself. Hybrid inorganic-organic perovskite materials promise direct conversion detectors with higher image quality, owing to their strong X-ray absorption, high electron and hole...conference paper 2022
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Hernández-Balaguera, E. (author), Munoz-Díaz, L. (author), Pereyra, C. (author), Lira-Cantu, M. (author), Najafi, M. (author), Galagan, Y. (author)The unprecedented increase of photovoltaic perovskites performance metrics has been obscured by the puzzling phenomenology underlying the device's anomalous ionic/electronic landscape. Thus, the establishment of a reliable measurement protocol of efficiency measurements, unanimously adopted by the perovskite's community, is indeed necessary to...article 2022
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Feleki, B.T. (author), Bouwer, R.K.M. (author), Zardetto, V. (author), Wienk, M.M. (author), Janssen, R.A.J. (author)An efficient substrate-configuration p-i-n metal-halide perovskite solar cell (PSC) is fabricated on a polymer-coated steel substrate. The optimized cell employs a Ti bottom electrode coated with a thin indium tin oxide (ITO) interlayer covered with a self-assembled [2-(9H-carbazol-9-yl)ethyl]phosphonic acid monolayer as a hole-selective contact...article 2022
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Hernández-Balaguera, E. (author), Romero, B. (author), Najafi, M. (author), Galagan, Y. (author)Interface engineering has become one of the most important research strategies to harness the full potential of perovskite solar cells. Photovoltaic community seems to herald the imminent development of 30% efficient perovskite devices with competitive lifetimes, subject, among other aspects, to clarify “what happens under the interfaces.” One...article 2022
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Ruiz-Preciado, M.A. (author), Gota, F. (author), Fassl, P. (author), Hossain, I.M. (author), Singh, R. (author), Laufer, F. (author), Schackmar, F. (author), Feeney, T. (author), Farag, A. (author), Allegro, I. (author), Hu, H. (author), Gharibzadeh, S. (author), Nejand, B.A. (author), Gevaerts, V.S. (author), Simor, M. (author), Bolt, P.J. (author), Paetzold, U.W. (author)Monolithic two-terminal (2T) perovskite/CuInSe2 (CIS) tandem solar cells (TSCs) combine the promise of an efficient tandem photovoltaic (PV) technology with the simplicity of an all-thin-film device architecture that is compatible with flexible and lightweight PV. In this work, we present the first-ever 2T perovskite/CIS TSC with a power...article 2022
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Zhang, D. (author), Datta, K. (author), Zardetto, V. (author), Veenstra, S. (author), Coletti, G. (author), Janssen, R.A.J. (author)Recently perovskite/crystalline Si (cSi) tandem cells draw considerable attention because their high efficiency can reduce the levelized cost of electricity and increase the power density of photovoltaics (PVs) to accelerate the energy transition. While the theoretical limits for tandem cells are well known, the practical limits are less clear....article 2022
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Ollearo, R. (author), Caiazzo, A. (author), Li, J. (author), Fattori, M. (author), van Breemen, A.J.J.M. (author), Wienk, M.M. (author), Gelinck, G.H. (author), Janssen, R.A.J. (author)Low-dimensional perovskites attract increasing interest due to tunable optoelectronic properties and high stability. Here, it is shown that perovskite thin films with a vertical gradient in dimensionality result in graded electronic bandgap structures that are ideal for photodiode applications. Positioning low-dimensional, vertically-oriented...article 2022
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Bakker, K. (author), Sala, J. (author), Najafi, M. (author), Daenen, M. (author), Geerligs, B. (author)During partial shading of a monolithically interconnected cell string, the shaded cells can operate at a reversed voltage. This negative voltage can lead to degradation of the shaded cell. For a successful practical application of large area Perovskite modules (e.g. in four terminal tandems) a shade tolerant top module is required. In this study...conference paper 2022
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Manshanden, P. (author), Coletti, G. (author), Rosca, V. (author), Jansen, M.J. (author), de Groot, K.M. (author), de Graaff, G.J. (author), Simurka, L. (author), Najafi, M. (author), Zardetto, V. (author), Dogan, I. (author), Fledderus, H. (author), Veenstra, S.C. (author), Creatore, M. (author)In order to further reduce the LCOE of PV, the conversion efficiency must increase beyond the practical limit of silicon technology (26% [1]). It is believed that tandem module technology, combining bottom c-Si cells with low-cost thin-film top cells, can overcome the silicon limit. Recently, bifacial glass/glass modules are gaining market share...conference paper 2021
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Geerligs, L.J. (author), Manshanden, P. (author), Hoek, E.G. (author), Okel, L.A.G. (author), Dogan, I. (author), Simurka, I. (author), Fledderus, H. (author), Zardetto, V. (author), Zhang, D. (author), Najafi, M. (author), Bracesco, A.E.A. (author), Creatore, M. (author), Coletti, G.C. (author), Veenstra, S.C. (author)—4-terminal tandem technology is a straightforward approach to bring to the market perovskite/crystalline silicon tandem modules. However, dealing with 4 terminals poses a challenge at system level for practical deployment. We have produced large area 4-terminal perovskite/crystalline silicon tandem modules for a study of the performance of a 2...conference paper 2021
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Deumel, S. (author), van Breemen, A.J.J.M. (author), Gelinck, G. (author), Peeters, B. (author), Maas, J. (author), Verbeek, R. (author), Shanmugam, S. (author), Akkerman, H. (author), Meulenkamp, E. (author), Huerdler, J.E. (author), Acharya, M. (author), García-Batlle, M. (author)To realize the potential of artificial intelligence in medical imaging, improvements in imaging capabilities are required, as well as advances in computing power and algorithms. Hybrid inorganic–organic metal halide perovskites, such as methylammonium lead triiodide (MAPbI3), offer strong X-ray absorption, high carrier mobilities (μ) and long...article 2021
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Smirnov, Y. (author), Schmengler, L. (author), Kuik, R. (author), Repecaud, P.A. (author), Najafi, M. (author), Zhang, D. (author), Theelen, M. (author), Aydin, E. (author), Veenstra, S. (author), de Wolf, S. (author), Morales-Masis, M. (author)Sputtered transparent conducting oxides (TCOs) are widely accepted transparent electrodes for several types of high-efficiency solar cells. However, the different sputtering yield of atoms makes stoichiometric transfer of target material challenging for multi-compounds. Additionally, the high kinetic energies of the arriving species may damage...article 2021
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Schötz, K. (author), Greve, C. (author), Langen, A. (author), Gorter, H. (author), Dogan, I. (author), Galagan, Y. (author), van Breemen, A.J.J.M. (author), Gelinck, G.H. (author), Herzig, E.M. (author), Panzer, F. (author)To develop a detailed understanding about halide perovskite processing from solution, the crystallization processes are investigated during spin coating and slot-die coating of MAPbI3 at different evaporation rates by simultaneous in situ photoluminescence, light scattering, and absorption measurements. Based on the time evolution of the optical...article 2021