Browsing by Research Areas "PV & Solar Buildings"

22% Efficient Dopant-free Interdigitated Back Contact Silicon Solar Cells

Wu, W. L.; Lin, W. J.; Zhong, S. H.; Paviet-Salomon, B.; Despeisse, M.; Liang, Z. C.; et al. (2018)

In this study, we present dopant-free back contact heterojunction silicon solar cells employing MoOx and MgFx based stacks as hole-and electron-selective contacts deposited using a thermal evaporation process at low ...

22.8% full-area bifacial n-PERT solar cells with rear side sputtered poly-si(n) passivating contact

Ingenito, A.; Allebé, C.; Libraro, S.; Ballif, C.; Paviet-Salomon, B.; Nicolay, S.; Diaz Leon, J. J. (2023-01)

25.1%-Efficient Monolithic Perovskite/Silicon Tandem Solar Cell Based on a p-type Monocrystalline Textured Silicon Wafer and High-Temperature Passivating Contacts

Nogay, G.; Sahli, F.; Werner, J.; Monnard, R.; Boccard, M.; Despeisse, M.; et al. (2019)

A monolithic two-terminal perovskite/silicon tandem solar cell based on an industrial, high-temperature tolerant p-type crystalline silicon bottom cell with a steady-state power conversion efficiency of 25.1% is demonstrated.

A Mixed-Phase SiOx Hole Selective Junction Compatible with High Temperatures Used in Industrial Solar Cell Manufacturing

Wyss, P.; Stuckelberger, J.; Nogay, G.; Horzel, J.; Jeangros, Q.; Mack, I.; et al. (2020-11)

A passivating contact concept compatible with a short thermal treatment

Ingenito, A.; Allebe, C.; Nogay, G.; Horzel, J.; Wyss, P.; Stuckelberger, J. A.; et al. (2018)

In this study we present a boron-doped silicon carbide layers as a hole-selective contact which is compatible with short annealing time (typically < 1 minute) as the one used for firing of metal pastes. The application of ...

A passivating contact for silicon solar cells formed during a single firing thermal annealing

Ingenito, A.; Nogay, G.; Jeangros, Q.; Rucavado, E.; Allebe, C.; Eswara, S.; et al. (2018)

Passivating contacts are indispensable for achieving high conversion efficiency in crystalline-silicon solar cells. Their realization and integration into a convenient process flow have become crucial research objectives. ...

Advanced method for electrical characterization of carrier-selective passivating contacts using transfer-lengthmethod measurements under variable illumination

Geissbühler, J.; Allebé, C.; Badel, N.; Wyss, P. (2021-04)

Advanced Silicon Thin Films for High-Efficiency Silicon Heterojunction-Based Solar Cells

Descoeudres, A.; Allebe, C.; Badel, N.; Barraud, L.; Champliaud, J.; Christmann, G.; et al. (2017)

The drop in passivation usually observed after the deposition of the p-doped amorphous silicon (a-Si:11) layer on top of the passivating intrinsic buffer a-Si:H layer during the fabrication of silicon heterojunction (SHJ) ...

Aluminium-Doped Zinc Oxide Rear Reflectors for High-Efficiency Silicon Heterojunction Solar Cells

Senaud, L.-L.; Christmann, G.; Descoeudres, A.; Geissbuhler, J.; Barraud, L.; Badel, N.; Allebe, C.; Nicolay, S.; Despeisse, M.; Paviet-Salomon, B.; Ballif, C. (2019)

This contribution demonstrates an improved infrared response of the rear reflector of monofacial silicon heterojunction solar cells using aluminium-doped zinc oxide (AZO) in lieu of indium tin oxide (ITO) in the back ...

Amorphous/Crystalline Silicon Interface Stability: Correlation between Infrared Spectroscopy and Electronic Passivation Properties

Holovsky, J.; De Nicolas, S. M.; De Wolf, S.; Ballif, C. (2020-10)

Analysis of hydrogen distribution and migration in fired passivating contacts (FPC)

Lehmann, M.; Valle, N.; Horzel, J.; Pshenova, A.; Wyss, P.; Dobeli, M.; et al. (2019)

High temperature passivating contacts for c-Si based solar cells are intensively studied because of their potential in boosting solar cell efficiency while being compatible with industrial processes at high temperatures. ...

Asymmetric band offsets in silicon heterojunction solar cells: Impact on device performance

Seif, J. P.; Menda, D.; Descoeudres, A.; Barraud, L.; Ozdemir, O.; Ballif, C.; et al. (2016)

Amorphous/crystalline silicon interfaces feature considerably larger valence than conduction band offsets. In this article, we analyze the impact of such band offset asymmetry on the performance of silicon heterojunction ...

Atomic Layer Deposited Electron Transport Layers in Efficient Organometallic Halide Perovskite Devices

McCarthy, M. M.; Walter, A.; Moon, S. J.; Noel, N. K.; O''Brien, S.; Pemble, M. E.; et al. (2018)

Amorphous TiO2 and SnO2 electron transport layers (ETLs) were deposited by low-temperature atomic layer deposition (AM. Surface morphology and x-ray photoelectron spectroscopy (ITS) indicate uniform and pinhole free coverage ...

Bottom-up and top-down approaches for identifying and mitigating electrical losses in silicon heterojunction solar cells

Senaud, L. -L.; Christmann, G.; Antognini, L.; Descoeudres, A.; Geissbuhler, J.; Boccard, M.; Paviet-Salomon, B. (2022-07)

Bulk defects and hydrogenation kinetics in crystalline silicon solar cells with fired passivating contacts

Lehmann, M.; Desthieux, A.; Valle, N.; Morisset, A.; Wyss, .P; Eswara, S.; Haug, F. -J (2022-04)

Calibration of ground surface albedo models

Tuomiranta, Arttu; Alet, Pierre-Jean; Ballif, Christophe; Ghedira, Hosni (2022-05-01)

The emergence of bifacial photovoltaics as a serious option for large-scale power generation makes the accuracy of the in-situ estimation of ground surface albedo increasingly critical. Recent studies have evaluated the ...

Closing the Cell-to-Module Efficiency Gap: A Fully Laser Scribed Perovskite Minimodule With 16% Steady-State Aperture Area Efficiency

Walter, A.; Moon, S. J.; Kamino, B. A.; Lofgren, L.; Sacchetto, D.; Matteocci, F.; et al. (2018)

Organic-inorganic halide perovskite solar cells show increasing power conversion efficiencies, approaching the values of silicon-based devices. To date, however, most of the reported record efficiencies for perovskite solar ...

Contact resistivity measurements and their applicability for accurate series resistance breakdown in heterojunction solar cell

Antognini, L.; Senaud, L. -L.; Türkay, D.; Marthey, L.; Dréon, J.; Paviet-Salomon, B.; Ballif, C. (2022-08)

Corrosion testing of solar cells: Wear-out degradation behavior

Fairbrother, A.; Gnocchi, L.; Ballif, C.; & Virtuani, A. (2022-12)

Demonstrating the high V-oc potential of PEDOT:PSS/c-Si heterojunctions on solar cells

Gogolin, R.; Zielke, D.; Descoeudres, A.; Despeisse, M.; Ballif, C.; Schmidt, J. (2017)

In this study, we demonstrate the high surface passivation quality of PEDOT:PSS/c-Si junctions for the first time on solar cell level, reaching a record high V-oc value of 688 mV after full-area metallization of the ...