Browsing by Author "Levrat, J."
Now showing items 1-10 of 10
-
Direct Contact to TCO with SmartWire Connection Technology
Faes, A.; Curvat, L.; Li, H. Y.; Levrat, J.; Champliaud, J.; Thomas, K.; et al. (2018)Silicon heterojunction solar cells without metallization can be interconnected using SmartWire Connection Technology (SWCT). The module performances can be comparable to standard SWCT module and the electrical contact of ... -
Field test and electrode optimization of electrodynamic cleaning systems for solar panels
Faes, A.; Petri, D.; Champliaud, J.; Geissbuhler, J.; Badel, N.; Levrat, J.; et al. (2019)Soiling is the major cause of power loss of photovoltaics (PV) and concentrated solar power (CSP) in desert areas. Electrodynamic cleaning system (EDS) is an automatic and water-free integrated cleaning system for mirrors ... -
Increasing the efficiency of silicon heterojunction solar cells and modules by light soaking
Kobayashi, E.; De Wolf, S.; Levrat, J.; Descoeudres, A.; Despeisse, M.; Haug, F. J.; et al. (2017)Silicon heterojunction solar cells use crystalline silicon (c-Si) wafers as optical absorbers and employ bilayers of doped/intrinsic hydrogenated amorphous silicon (a-Si:H) to form passivating contacts. Recently, we ... -
Industrialization of hybrid Si/III–V and translucent planar micro-tracking modules
Nardin, G.; Domínguez, C.; Aguilar, Á. F.; Anglade, L.; Duchemin, M.; Schuppisser, D.; Gerlich, F.; Ackermann, M.; Coulot, L.; Cuénod, B.; Petri, D.; Niquille, X.; Badel, N.; Lachowicz, A.; Despeisse, M.; Levrat, J.; Ballif, C.; Askins, S.; Núñez, R.; Jost, N.; Vallerotto, G. (2020-12-21) -
Light-induced performance increase of silicon heterojunction solar cells
Kobayashi, E.; De Wolf, S.; Levrat, J.; Christmann, G.; Descoeudres, A.; Nicolay, S.; et al. (2016)Silicon heterojunction solar cells consist of crystalline silicon (c-Si) wafers coated with doped/intrinsic hydrogenated amorphous silicon (a-Si:H) bilayers for passivating-contact formation. Here, we unambiguously demonstrate ... -
Low-Temperature Screen-Printed Metallization for the Scale-Up of Two-Terminal Perovskite-Silicon Tandems
Kamino, B. A.; Paviet-Salomon, B.; Moon, S. J.; Badel, N.; Levrat, J.; Christmann, G.; et al. (2019)Tandem photovoltaic devices based on perovskite and crystalline silicon (PK/c-Si) absorbers have the potential to push commercial silicon single junction devices beyond their current efficiency limit. However, their scale-up ... -
New guidelines for a more accurate extraction of solar cells and modules key data from their current-voltage curves
Paviet-Salomon, B.; Levrat, J.; Fakhfouri, V.; Pelet, Y.; Rebeaud, N.; Despeisse, M.; et al. (2017)This paper investigates the optimisation of the fit procedures to determine with the highest accuracy the key data of photovoltaic cells and modules from their current-voltage characteristics. Our analysis is based on ... -
Quantifying and Modeling the Impact of Interconnection Failures on the Electrical Performance of Crystalline Silicon Photovoltaic Modules
Annigoni, E.; Virtuani, A.; Levrat, J.; Faes, A.; Despeisse, M.; Ballif, C.; et al. (2018)We present an electrical model developed with LT SPICE that simulates the performance of a string of cells with disconnections in the electrical circuit. In a previous contribution, we quantified experimentally how the ... -
Quantifying and modeling the impact of interconnection failures on the electrical performance of crystalline silicon photovoltaic modules
Annigoni, E.; Virtuani, A.; Levrat, J.; Faes, A.; Sculati-Meillaud, F.; Despeisse, M.; et al. (2019)Failures in the metallic interconnections are among the main degradation modes for photovoltaic modules. Fatigue accumulation due to thermomechanical stresses can result in deterioration of the solder joints or in broken ... -
Reassessment of Cell to Module Gains and Losses: Accounting for the Current Boost Specific to Cells Located on the Edges
Dupre, O.; Levrat, J.; Champliaud, J.; Despeisse, M.; Boccard, M.; Ballif, C. (2018)The power produced by a photovoltaic module is not simply the sum of the powers of its constituents cells. The difference stems from a number of so-called 'cell-to-module' (CTM) gain or loss mechanisms. These are getting ...