Browsing by Author "Ballif, C."
Now showing items 1-20 of 46
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1 cm(2) CH3NH3PbI3 mesoporous solar cells with 17.8% steady-state efficiency by tailoring front FTO electrodes
Afzaal, M.; Yates, H. M.; Walter, A.; Nicolay, S.; Ballif, C. (2017)In this article, we investigate the effects of atmospheric-pressure chemical vapour deposited fluorine doped tin oxide (FTO) thin films as front electrodes for the fabrication of mesoporous perovskite solar cells with an ... -
A Physically-Based Electrical Model for Lithium-Ion Cells
Brivio, C.; Musolino, V.; Merlo, M.; Ballif, C. (2019)Prediction of battery performance is essential in assessing the technical and economic viability of battery systems. We present a novel impedance-based model of a lithium-ion cell that accounts for the dynamic response of ... -
A" combi-encapsulant" for enhanced performance of glass-free lightweight crystalline silicon solar PV modules
Lisco, F.; Virtuani, A.; Ballif, C. (2021-06) -
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 lithium-ion cells performance, through novel test protocol for stationary applications
Brivio, C.; Musolino, V.; Alet, P. J.; Merlo, M.; Hutter, A.; Ballif, C.; et al. (2017)Renewable energy sources (RES) are changing the operating conditions of power systems. In this context, battery energy storage systems (BESSs) could be a viable technical solution to maximize the local consumption of RES ... -
Application-independent protocol for predicting the efficiency of lithium-ion battery cells in operations
Brivio, C.; Musolino, V.; Alet, P. J.; Merlo, M.; Hutter, A.; Ballif, C. (2018)Despite a continuous reduction in battery prices, investment in storage systems carries a high risk. Indeed, many applications lack an adequate test protocol and method to predict the performance of batteries in operations. ... -
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 ... -
Automated quantification of PV hosting capacity in distribution networks under user-defined control and optimisation procedures
Martin, W.; Stauffer, Y.; Ballif, C.; Hutter, A.; Alet, P. J. (2018)With the rising popularity of photovoltaic (PV) power, utility companies are experiencing a growing number of interconnection requests on their networks. Combined with power quality issues, the distribution system operator ... -
Benefits of a Diversified Energy Mix for Islanded Systems
Cauz, M.; Bloch, L.; Rod, C.; Perret, L.; Ballif, C.; Wyrsch, N. (2020-07) -
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 ... -
Design Rules to Fully Benefit from Bifaciality in Two-Terminal Perovskite/Silicon Tandem Solar Cells
Dupre, O.; Tuomiranta, A.; Jeangros, Q.; Boccard, M.; Alet, P.-J.; Ballif, C. (2020-03) -
Economic viability for residential battery storage systems in grid-connected PV plants
Barcellona, S.; Piegari, L.; Musolino, V.; Ballif, C. (2018)Today''s residential battery energy storage systems (BESSs) are off the shelf products used to increase the self-consumption of residential photovoltaic (PV) plants and to reduce the losses related to energy transfer in ... -
Effects of Work Function and Electron Affinity on the Performance of Carrier-Selective Contacts in Silicon Solar Cells Using ZnSnx Ge1?xN2 as a Case Study
Fébba, D.; Paratte, V.; Antognini, L.; Dréon, J.; Hurni, J.; Thomet, J.; Rubinger, R.; Bortoni, E.; Ballif, C.; Boccard, M. (2021-09) -
EVA for Glass/Glass Solar PV Modules: Effect of encasulant storage conditions and process parameters
Gnocchi, L.; Virtuani, A.; Ballif, C. (2021-06) -
Fast and Nondestructive Detection on the EVA Gel Content in Photovoltaic Modules by Optical Reflection
Li, Heng-Yu.; Luo, Yun.; Ballif, C.; Perret-Aebi, L.-E. (2015)Poly(ethylene-co-vinyl acetate) (EVA) has been the dominating material in the photovoltaic (PV) encapsulant market for decades, owing to its superior cost-performance balance. To achieve its desired material properties, ... -
Field Performance versus Standard Test Condition Efficiency of Tandem Solar Cells and the Singular Case of Perovskites/Silicon Devices
Dupre, O.; Niesen, B.; De Wolf, S.; Ballif, C. (2018)Multijunction cells may offer a cost-effective route to boost the efficiency of industrial photovoltaics. For any technology to be deployed in the field, its performance under actual operating conditions is extremely ... -
High-Bandgap Perovskite Materials for Multijunction Solar Cells
Yang, T. C. J.; Fiala, P.; Jeangros, Q.; Ballif, C. (2018)High-bandgap (>1.7 eV) mixed halide perovskites for multijunction solar cells are usually affected by photoinduced phase segregation, which triggers subbandgap defects that are detrimental to the open-circuit voltage. While ... -
Improved Ramp-Rate and Self Consumption Ratio In A Renewable-Energy-Based DC Micro-Grid
Musolino, V.; Rod, C.; Alet, P. J.; Hutter, A.; Ballif, C. (2017)Power fluctuations, especially in LV grids, are increasing due to the continuing penetration of renewable energy sources which are naturally variable and characterized by fast transients of the energy production. In order ... -
In-situ Determination of Moisture Diffusion Properties of PV Module Encapsulants Using Digital Humidity Sensors
Jankovec, M.; Annigoni, E.; Ballif, C.; Topic, M. (2018)We conducted a long-term (>6500 h) in-situ PV module humidity monitoring experiment, where digital humidity sensors encapsulated in different encapsulants (EVA, TPO, POE and ionomer) were exposed to different humidity ...