Publications related to Current Losses at the Front of Silicon Heterojunction Solar Cells

Annealing of Silicon Heterojunction Solar Cells: Interplay of Solar Cell and Indium Tin Oxide Properties

Christophe Ballif, Raphaël François Lemerle, Mathieu Gérard Boccard, Jan Haschke, Brahim Aissa

In this paper, we report the evolution of silicon heterojunction solar cell properties focusing, in particular, on the indium tin oxide (ITO) layers upon consecutive thermal annealing. We find that the charge carrier density

N_{\rm e}

of the ITO increase ...

2019

Gallium Nitride as Transparent Electron-Selective Contact in Silicon Heterojunction Solar Cells

Christophe Ballif, Mathieu Gérard Boccard, Angela Nicole Fioretti, Tzu-Chin Chang Chien, Yashi Xiao

Carrier-selective, passivating contacts have allowed silicon heterojunction (SHJ) cells to reach recordbreaking efficiencies particularly in all-back-contacted designs. However, two-side-contacted SHJ cell efficiency has been limited due in part to parasit ...

2019

Photocatalytic ammonia production enhanced by a plasmonic near-field and hot electrons originating from aluminium nanostructures

Olivier Martin, Christian Santschi, Madasamy Thangamuthu

Ammonia production at room temperature and atmospheric pressure is in high demand to assist in energy saving and the protection of the environment worldwide, as well as to help reduce CO2 emissions. Recently, plasmonic nanomaterials have been frequently us ...

2019

Low-temperature growth of n(++)-GaN by metalorganic chemical vapor deposition to achieve low-resistivity tunnel junctions on blue light emitting diodes

Nicolas Grandjean, Jean-François Carlin, Pirouz Sohi, Yao Chen, Mauro Mosca

We report on low-resistivity GaN tunnel junctions (TJ) on blue light-emitting diodes (LEDs). Si-doped n(++)-GaN layers are grown by metalorganic chemical vapor deposition directly on LED epiwafers. Low growth temperature (

IOP PUBLISHING LTD2019

Non-covalent Methods of Engineering Optical Sensors Based on Single-Walled Carbon Nanotubes

Ardemis Anoush Boghossian, Alice Judith Gillen

Optical sensors based on single-walled carbon nanotubes (SWCNTs) demonstrate tradeoffs that limit their use in in vivo and in vitro environments. Sensor characteristics are primarily governed by the non-covalent wrapping used to suspend the hydrophobic SWC ...

2019

Full-Area Passivating Contacts with High and Low Thermal Budgets: Solutions for High Efficiency c-Si Solar Cells

Gizem Nogay

Today more than 90% of the global PV market is covered by c-Si solar cells which are limited by recombination losses at the metal-semiconductor interface. This recombination path can be avoided by separating the metal from the c-Si wafer by introducing a b ...

EPFL2018

Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency

Christophe Ballif, Quentin Thomas Jeangros, Davide Sacchetto, Bertrand Yves Paul Paviet-Salomon, Florent Sahli, Gianluca Cattaneo, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Björn Niesen, Loris Barraud, Laura Ding, Jérémie Werner, Matthias Wolfgang Bräuninger, Raphaël Monnard

Tandem devices combining perovskite and silicon solar cells are promising candidates to achieve power conversion efficiencies above 30% at reasonable costs. State-of-the-art monolithic two-terminal perovskite/silicon tandem devices have so far featured sil ...

2018

Phosphorous-Doped Silicon Carbide as Front-Side Full-Area Passivating Contact for Double-Side Contacted c-Si Solar Cells

Christophe Ballif, Franz-Josef Haug, Andrea Ingenito, Matthieu Despeisse, Gizem Nogay, Philipp Friedrich Hermann Löper, Philippe Wyss, Josua Andreas Stückelberger, Luca Gnocchi

We present an electron selective passivating contact based on a tunneling SiOx capped with a phosphorous doped siliconcarbideandpreparedwithahigh-temperaturethermalanneal. We investigate in detail the effects of the preparation conditions of theSiCx(n)(i.e ...

2018

Measuring carrier injection from amorphous silicon into crystalline silicon using photoluminescence

Gizem Nogay, Philipp Friedrich Hermann Löper

In devices with intrinsic amorphous silicon layer on a crystalline silicon substrate, the light absorbed in the amorphous layer can be weakly electronically coupled into the silicon base. Such carrier injection has previously been reported from measurement ...

WILEY2018

Silicon Heterojunction Solar Cells on Quasi-mono Wafers

Christophe Ballif, Antoine Descoeudres, Matthieu Despeisse, Mathieu Gérard Boccard, Loris Barraud, Jan Haschke, Raphaël Monnard, Brahim Aissa

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 hydrogen passivation alone seems not t ...

IEEE2018

Current Losses at the Front of Silicon Heterojunction Solar Cells

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Annealing of Silicon Heterojunction Solar Cells: Interplay of Solar Cell and Indium Tin Oxide Properties

Gallium Nitride as Transparent Electron-Selective Contact in Silicon Heterojunction Solar Cells

Photocatalytic ammonia production enhanced by a plasmonic near-field and hot electrons originating from aluminium nanostructures

Low-temperature growth of n(++)-GaN by metalorganic chemical vapor deposition to achieve low-resistivity tunnel junctions on blue light emitting diodes

Non-covalent Methods of Engineering Optical Sensors Based on Single-Walled Carbon Nanotubes

Full-Area Passivating Contacts with High and Low Thermal Budgets: Solutions for High Efficiency c-Si Solar Cells

Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency

Phosphorous-Doped Silicon Carbide as Front-Side Full-Area Passivating Contact for Double-Side Contacted c-Si Solar Cells

Measuring carrier injection from amorphous silicon into crystalline silicon using photoluminescence

Silicon Heterojunction Solar Cells on Quasi-mono Wafers

Full-Area Passivating Contacts with High and Low Thermal Budgets: Solutions for High Efficiency c-Si Solar Cells

Non-covalent Methods of Engineering Optical Sensors Based on Single-Walled Carbon Nanotubes

Annealing of Silicon Heterojunction Solar Cells: Interplay of Solar Cell and Indium Tin Oxide Properties

Gallium Nitride as Transparent Electron-Selective Contact in Silicon Heterojunction Solar Cells

Low-temperature growth of n(++)-GaN by metalorganic chemical vapor deposition to achieve low-resistivity tunnel junctions on blue light emitting diodes

Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency

Photocatalytic ammonia production enhanced by a plasmonic near-field and hot electrons originating from aluminium nanostructures

Phosphorous-Doped Silicon Carbide as Front-Side Full-Area Passivating Contact for Double-Side Contacted c-Si Solar Cells

Measuring carrier injection from amorphous silicon into crystalline silicon using photoluminescence

Silicon Heterojunction Solar Cells on Quasi-mono Wafers