Browsing by Author "Barraud, L."
Now showing items 1-12 of 12
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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 ... -
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 ... -
Efficient Near-Infrared-Transparent Perovskite Solar Cells Enabling Direct Comparison of 4-Terminal and Monolithic Perovskite/Silicon Tandem Cells
Werner, J.; Barraud, L.; Walter, A.; Brauninger, M.; Sahli, F.; Sacchetto, D.; et al. (2016)Combining market-proven silicon solar cell technology with an efficient wide band gap top cell into a tandem device is an attractive approach to reduce the cost of photovoltaic systems. For this, perovskite solar cells are ... -
Engineering of Thin-Film Silicon Materials for High Efficiency Crystalline Silicon Solar Cells
Despeisse, M.; Barraud, L.; Paviet-Salomon, B.; Descoeudres, A.; Senaud, L. L.; Allebe, C.; et al. (2018)Thin-film silicon layers deposited in parallel-plate PECVD reactors can be produced with varying microstructure, composition and properties, depending on deposition process conditions and on the underlying substrate ... -
Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction
Sahli, F.; Kamino, B. A.; Werner, J.; Brauninger, M.; Paviet-Salomon, B.; Barraud, L.; et al. (2018)Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current ... -
Interdigitated back contact silicon heterojunction solar cells featuring an interband tunnel junction enabling simplified processing
Paviet-Salomon, B.; Tomasi, A.; Lachenal, D.; Badel, N.; Christmann, G.; Barraud, L.; et al. (2018)This paper reports on the development of an innovative back-contacted crystalline silicon solar cell with passivating contacts featuring an interband tunnel junction at its electron-collecting contacts. In this novel ... -
Low-temperature processes for passivation and metallization of high-efficiency crystalline silicon solar cells
Descoeudres, A.; Allebe, C.; Badel, N.; Barraud, L.; Champliaud, J.; Christmann, G.; et al. (2018)This paper reviews recent progress made at CSEM on the development of low-temperature processes for the fabrication of amorphous silicon-based passivated contacts and for the metallization of high-efficiency silicon ... -
Mechanically stacked 4-terminal III-V/Si tandem solar cells
Essig, S.; Allebe, C.; Geisz, J. F.; Steiner, M. A.; Barraud, L.; Descoeudres, A.; et al. (2017)We developed 4-terminal III-V/Si dual-junction solar cells that reach certified record 1-sun efficiencies over 32%. These efficiency values exceed the theoretical efficiency limit of single-junction solar cells and prove ... -
Rear-emitter silicon heterojunction solar cells with atomic layer deposited ZnO:Al serving as an alternative transparent conducting oxide to In2O3:Sn
Niemela, J. P.; Macco, B.; Barraud, L.; Descoeudres, A.; Badel, N.; Despeisse, M.; et al. (2019)Here high-efficiency (above 21%) large-area silicon heterojunction solar cells with atomic layer deposited ZnO:Al as front- or back-side transparent conducting oxide are demonstrated. Photoconductance decay measurements ... -
Silicon Heterojunction Solar Cells on Quasi-mono Wafers
Haschke, J.; Kivambe, M. M.; Horzel, J.; Monnard, R.; Barraud, L.; Descoeudres, A.; et al. (2018)We applied hydrogen passivation, gettering and a combination of both to quasi-mono (qm) wafer material to enhance its bulk lifetime and prepared silicon heterojunction (SHJ) solar cells. We find that while our applied ... -
Simple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growth
Tomasi, A.; Paviet-Salomon, B.; Jeangros, Q.; Haschke, J.; Christmann, G.; Barraud, L.; et al. (2017)For crystalline-silicon solar cells, voltages close to the theoretical limit are nowadays readily achievable when using passivating contacts. Conversely, maximal current generation requires the integration of the electron ...