Aïcha Hessler-Wyser

Nationalité: CH

EPFL STI IMT PV-LAB
MC A2 305 (Bâtiment MC)
Rue de la Maladière 71b, CP 526
2002 Neuchâtel 2

Expertise

TEM, SEM, Photovoltaics, Science des matériaux (métallurgie, matériaux pour l'énergie)

Mission

ENSEIGNEMENT Enseignement théorique et pratique de la microscopie électronique à transmission et à balayage Encadrement détudiants bachelor ou master en sciences de matériaux et en physique. Supervision de doctorants en sciences des matériaux et en physique RECHERCHE Etude microstructurale des matériaux et interfaces dans les dispositifs photovoltaîques. Management du laboratoire de photovoltaîque et couches minces électroniques en tant que directrice adjointe du laboratoire. Etude microstructurale dans le domaine des matériaux pour l

Formation

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1999 – 1999 EPFL
Dirigée par Rolf Gotthardt

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1994 – 1994 EPFL
Dirigée par J.-D. Ganière

Publications représentatives

Oxidation mechanism of nickel particles studied in an environmental transmission electron microscope

Jeangros, Q Hansen, T.W. Wagner, J.B, Dunin-Borkowski, R.E. H�bert, C. Van herle, J Hessler-Wyser, A
Published in Acta Materialia, Vol 67 (2014), 362-372 in

Time-resolved X-ray microtomography observation of inter metallic formation between solid Fe and liquid Al

Pasche, G SCheel, M Sch�ublin, R H�bert, C. Rappaz, M Hessler-Wyser, A
Published in Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 44(9):(2013) 4119-4123 in

Cr-poisoning in (La,Sr)(Co, Fe)O3 cathodes after 10'000h SOFC stack testing

Schuler, A Wuillemin, Z Hessler-Wyser, A Comminges, C Steriner, N. Y Van herle, J
Published in Journal of Power Sources, Vol 211 (2012) 177-183 in

Mechanical and microstructural integrity of nickel-titanium and stainless steel laser joined wires

Vannod, J Bornert, M Bidaux, J-E Bataillard, L Karimi, A Drezet, J-M Rappaz, M Hessler-Wyser, A
Published in Acta Materialia, Vol 59, 17 (2011) 6538-6546 in

Microstructure at submicron scale of the white layer produced by EDM technique

Cusanelli, G., R. Fl�kiger, A. Hessler-Wyser, F. Bobard, R. Demellayer, and R. Perez
Published in Journal of Materials Processing Technology, 2004. 149(1-3): p. 289-295 in

Use of quantitative EELS and cathodoluminescence for study of carrier confinement and diffusion in self organized vertical quantum wells

Leifer, K., S. Mautino, H. Weman, A. Rudra, E. Pelucchi, F. Bobard, A. Wyser, and E. Kapon
Published in Design and Nature, 2004. 6: p. 131 in

Silver thick-film contacts on highly doped n-type silicon emitters: Structural and electronic properties of the interface

Ballif, C., D.M. Huljic, G. Willeke, and A. Hessler-Wyser
Published in Applied Physics Letters, 2003. 82(12): p. 1878-1880 in

TEM studies of in situ martensitic transformation in NiTi thin films

Crevoiserat, S., T. Lehnert, A. Hessler-Wyser, and R. Gotthardt
Published in Journal De Physique. IV: JP, 2001. 11(8) in

Multilayered phase formation after high-fluence implantation of nickel into aluminium

Hessler-Wyser, A., A. Cuenat, M. Döbeli, C. Abromeit, and R. Gotthardt
Published in Philosophical Magazine Letters, 2001. 81(12): p. 893-899 in

Structure analysis by diffraction of amorphous zones created by Ni ion implantation into pure Al. Ultramicroscopy

Cuenat, A., R. Schäublin, A. Hessler-Wyser, and R. Gotthardt
Published in Ultramicroscopy, 2000. 83(3-4): p. 179-191 in

Amorphization in Al induced by high-energy Ni ion implantation

Wyser, A., R. Gotthardt, and R. Schäublin
Published in Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 1996. 107(1-4): p. 273-275 in

2025

Enhancing the Performance and Photostability of Perovskite Solar Cells with a Multifunctional Light‐Management Composite

S. M. MousaviM. OthmanF. ZouN. LamminenG. C. Tewari  et al.

Small Science. 2025. DOI : 10.1002/smsc.202500330.

Perovskite-perovskite-silicon triple junction solar cells with improved carrier and photon management

K. ArtukD. TürkayA. G. KubaS. RiemelmoserJ. Steele  et al.

2025

Making from Breaking: Degradation Inversion Enables Vapor-Phase Synthesis of Halide Perovskites in Ambient Conditions

A. G. KubaF. SahliM. OthmanK. ArtukQ. Jeangros  et al.

ACS Energy Letters. 2025. DOI : 10.1021/acsenergylett.4c03395.

Suppression of Stacking Faults for Stable Formamidinium-Rich Perovskite Absorbers

M. OthmanL. AgostaQ. JeangrosA. JaffresS. Jenatsch  et al.

ADVANCED MATERIALS. 2025. DOI : 10.1002/adma.202502142.

60 cm2 perovskite-silicon tandem solar cells with an efficiency of 28.9% by homogenous passivation

K. ArtukA. OranskaiaD. TürkayF. SaenzM. D. Mensi  et al.

2025

Beyond Flat: Undulated Perovskite Solar Cells on Microscale Si Pyramids by Solution Processing

D. TurkayK. ArtukM. OthmanF. SahliL. Champault  et al.

ACS ENERGY LETTERS. 2025. DOI : 10.1021/acsenergylett.5c00221.

Aryl-Acetylene Layered Hybrid Perovskites in Photovoltaics

G. AlsabehV. SlamaM. RenM. AlmalkiL. Pfeifer  et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION. 2025. DOI : 10.1002/anie.202417432.

2024

Improving the photo-stability of triple cation perovskite solar cells using chromophore-infused optically transparent Pectin/polymethyl methacrylate composite

S. M. MousaviJ. VapaavuoriF. ZouN. LamminenH. Baniasadi  et al.

2024. MATSUS Spring 2025 Conference, Sevilla, Spain, 2025-03-03 - 2025-03-07. DOI : 10.29363/nanoge.matsusspring.2025.335.

Linking Nanoscopic Insights to Millimetric-Devices in Formamidinium-Rich Perovskite Photovoltaics

M. OthmanQ. JeangrosM. U. RothmannY. JiangC. Ballif  et al.

Advanced Materials. 2024. DOI : 10.1002/adma.202409742.

Bifacial perovskite/silicon heterojunction tandem solar cells based on FAPbI<inf>3</inf>-based perovskite via hybrid evaporation-spin coating

M. R. GolobostanfardM. OthmanD. TurkayK. ArtukX. Y. Chin  et al.

Nano Energy. 2024. DOI : 10.1016/j.nanoen.2024.110269.

Assessing the Influence of Illumination on Ion Conductivity in Perovskite Solar Cells

A. SchillerS. JenatschB. BlülleM. A. Torre CachafeiroF. Ebadi  et al.

The journal of physical chemistry letters. 2024. DOI : 10.1021/acs.jpclett.4c02403.

Development and characterization of N2O-plasma oxide layers for high-temperature p-type passivating contacts in silicon solar cells

S. LibraroL. BannenbergT. FamprikisD. ReyesJ. Hurni  et al.

ACS Applied Materials & Interfaces. 2024. DOI : 10.1021/acsami.4c10612.

Blade-Coating of High Crystallinity Cesium-Formamidinium Perovskite Formulations

A. JaffrèsM. OthmanF. SaenzA. Hessler-WyserQ. Jeangros  et al.

ACS applied materials & interfaces. 2024. DOI : 10.1021/acsami.4c04706.

Colouring solutions for building integrated photovoltaic modules: A review

A. Borja BlockJ. Escarre PalouM. CourtantA. VirtuaniG. Cattaneo  et al.

Energy and Buildings. 2024. DOI : 10.1016/j.enbuild.2024.114253.

Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal-halide perovskites

M. OthmanQ. JeangrosD. A. JacobsM. H. FutscherS. Zeiske  et al.

Energy & Environmental Science. 2024. DOI : 10.1039/d4ee00901k.

Stress tolerance of lightweight glass-free PV modules for vehicle integration

U. B. DesaiK. NicoletS. PrabhudesaiG. CattaneoJ. Robin  et al.

Epj Photovoltaics. 2024. DOI : 10.1051/epjpv/2024003.

Nanostructure and Optical Property Tailoring of Zinc Tin Nitride Thin Films through Phenomenological Decoupling: A Pathway to Enhanced Control

C. HainK. WieczerzakD. CasariA. SharmaA. Xomalis  et al.

Acs Applied Nano Materials. 2024. DOI : 10.1021/acsanm.3c06178.

A Universal Perovskite/C60 Interface Modification via Atomic Layer Deposited Aluminum Oxide for Perovskite Solar Cells and Perovskite-Silicon Tandems

K. ArtukD. TurkayM. D. MensiJ. A. SteeleD. A. Jacobs  et al.

Advanced Materials. 2024. DOI : 10.1002/adma.202311745.

Interactions between aluminium and fired passivating contacts during fire-through metallization (vol 249, 112051, 2023)

S. LibraroM. LehmannJ. J. D. LeonC. AllebeA. Descoeudres  et al.

Solar Energy Materials And Solar Cells. 2024. DOI : 10.1016/j.solmat.2024.112722.

Microstructural and electrical characterization of high temperature passivating contacts for silicon solar cells

S. Libraro / A. Hessler-WyserF.-J. Haug (Dir.)

Lausanne, EPFL, 2024. DOI : 10.5075/epfl-thesis-10516.

2023

Operando analysis of a solid oxide fuel cell by environmental transmission electron microscopy

Q. JeangrosM. BugnetT. EpicierC. FrantzS. Diethelm  et al.

Nature Communications. 2023. DOI : 10.1038/s41467-023-43683-4.

Understanding and mitigating resistive losses in fired passivating contacts: role of the interfaces and optimization of the thermal budget

S. LibraroA. M. I. MorissetJ. HurniE. GencL. Antognini  et al.

Solar Energy Materials And Solar Cells. 2023. DOI : 10.1016/j.solmat.2023.112591.

Passivating contact-based tunnel junction Si solar cells using machine learning for tandem cell applications

H. ParkA. MorissetM. KimH.-S. LeeA. Hessler-Wyser  et al.

Energy And Ai. 2023. DOI : 10.1016/j.egyai.2023.100299.

Interactions between aluminium and fired passivating contacts during fire-through metallization

S. LibraroM. LehmannJ. J. D. LeonC. AllebeA. Descoeudres  et al.

Solar Energy Materials And Solar Cells. 2023. DOI : 10.1016/j.solmat.2022.112051.

Plasma-Assisted Hybrid Vapour Deposition Technology for Thin Film Fabrication

C. Hain / A. Hessler-WyserT. Nelis (Dir.)

Lausanne, EPFL, 2023. DOI : 10.5075/epfl-thesis-10204.

III-V Nitride Semiconductors Deposited At Low Temperature For Photovoltaic Applications

J. E. Thomet / A. Hessler-WyserN. Würsch (Dir.)

Lausanne, EPFL, 2023. DOI : 10.5075/epfl-thesis-10249.

2022

Microwave plasma-assisted reactive HiPIMS of InN films: Plasma environment and material characterisation

C. HainP. SchweizerP. SturmA. BorziJ. E. Thomet  et al.

Surface & Coatings Technology. 2022. DOI : 10.1016/j.surfcoat.2022.129188.

Bandgap engineering of indium gallium nitride layers grown by plasma-enhanced chemical vapor deposition

J. E. ThometA. K. SinghM. N. RouecheN. ToggwylerF.-J. Haug  et al.

Journal Of Vacuum Science & Technology A. 2022. DOI : 10.1116/6.0002039.

From pulsed-DCMS and HiPIMS to microwave plasma-assisted sputtering: Their influence on the properties of diamond-like carbon films

C. HainD. BrownA. WelshK. WieczerzakR. Weiss  et al.

Surface & Coatings Technology. 2022. DOI : 10.1016/j.surfcoat.2021.127928.

2021

Quantification of hydrogen in nanostructured hydrogenated passivating contacts for silicon photovoltaics combining SIMS-APT-TEM: A multiscale correlative approach

S. PalJ. BarrireroM. LehmannQ. JeangrosN. Valle  et al.

Applied Surface Science. 2021. DOI : 10.1016/j.apsusc.2021.149650.

Passivating Polysilicon Recombination Junctions for Crystalline Silicon Solar Cells

F.-J. HaugA. MorissetP. WyssM. LehmannA. Hessler-Wyser  et al.

physica status solidi (RRL) – Rapid Research Letters. 2021. DOI : 10.1002/pssr.202100272.

2019

Field test and electrode optimization of electrodynamic cleaning systems for solar panels

A. FaesD. PetriJ. ChampliaudJ. GeissbuehlerN. Badel  et al.

Progress In Photovoltaics. 2019. DOI : 10.1002/pip.3176.

A method for quantitative nanoscale imaging of dopant distributions using secondary ion mass spectrometry: an application example in silicon photovoltaics

S. EswaraA. PshenovaE. LentzenG. NogayM. Lehmann  et al.

Mrs Communications. 2019. DOI : 10.1557/mrc.2019.89.

Zr-doped indium oxide electrodes: Annealing and thickness effects on microstructure and carrier transport

E. RucavadoF. LanducciM. DoebeliQ. JeangrosM. Boccard  et al.

Physical Review Materials. 2019. DOI : 10.1103/PhysRevMaterials.3.084608.

A multi-technique approach to study the microstructural properties of tin-based transparent conductive oxides

F. Landucci / A. Hessler-WyserC. Hébert (Dir.)

Lausanne, EPFL, 2019. DOI : 10.5075/epfl-thesis-9536.

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

M. LehmannN. ValleJ. HorzelA. PshenovaP. Wyss  et al.

Solar Energy Materials and Solar Cells. 2019. DOI : 10.1016/j.solmat.2019.110018.

2017

Metallization of Si heterojunction solar cells by nanosecond laser ablation and Ni-Cu plating

A. DabirianA. LachowiczJ. -W. SchuttaufB. Paviet-SalomonM. Morales-Masis  et al.

Solar Energy Materials And Solar Cells. 2017. DOI : 10.1016/j.solmat.2016.09.021.

Zinc blende-wurtzite polytypism in nanocrystalline ZnO films

A. B. AebersoldL. FanniA. Hessler-WyserS. NicolayC. Ballif  et al.

Acta Materialia. 2017. DOI : 10.1016/j.actamat.2017.03.021.

High performance amorphous Zn-Sn-O: impact of composition, microstructure, and thermal treatments in the optoelectronic properties

M. Morales-MasisE. RucavadoQ. JeangrosF. LanducciA. Hessler-Wyser  et al.

2017. 8th Conference on Oxide-Based Materials and Devices VIII, San Francisco, CA, JAN 29-FEB 01, 2017. DOI : 10.1117/12.2252603.

Direct Imaging of Dopant Distribution in Polycrystalline ZnO Films

F. LorenzoA. B. AebersoldM. Morales-MasisM. LedinskyS. Escrig  et al.

ACS Applied Materials & Interfaces. 2017. DOI : 10.1021/acsami.6b14350.

Enhancing the optoelectronic properties of amorphous zinc tin oxide by subgap defect passivation: A theoretical and experimental demonstration

E. RucavadoQ. JeangrosD. UrbanJ. HolovskyZ. Remes  et al.

Physical Review B. 2017. DOI : 10.1103/PhysRevB.95.245204.

2016

Tuning the Optoelectronic Properties of ZnO:Al by Addition of Silica for Light Trapping in High-Efficiency Crystalline Si Solar Cells

A. DabirianS. M. De NicolasB. NiesenA. Hessler-WyserS. De Wolf  et al.

Advanced Materials Interfaces. 2016. DOI : 10.1002/admi.201500462.

Strategies for Doped Nanocrystalline Silicon Integration in Silicon Heterojunction Solar Cells

J. P. SeifA. DescoeudresG. NogayS. HanniS. M. De Nicolas  et al.

Ieee Journal Of Photovoltaics. 2016. DOI : 10.1109/Jphotov.2016.2571619.

Lithium Fluoride Based Electron Contacts for High Efficiency n-Type Crystalline Silicon Solar Cells

J. BullockP. ZhengQ. JeangrosM. TosunM. Hettick  et al.

Advanced Energy Materials. 2016. DOI : 10.1002/aenm.201600241.

In Situ TEM Analysis of Organic-Inorganic Metal-Halide Perovskite Solar Cells under Electrical Bias

Q. JeangrosM. DuchampJ. WernerM. KruthR. E. Dunin-Borkowski  et al.

Nano Letters. 2016. DOI : 10.1021/acs.nanolett.6b03158.

An Indium-Free Anode for Large-Area Flexible OLEDs: Defect-Free Transparent Conductive Zinc Tin Oxide

M. Morales-MasisF. DauzouQ. JeangrosA. DabirianH. Lifka  et al.

Advanced Functional Materials. 2016. DOI : 10.1002/adfm.201503753.

2015

22.5% efficient silicon heterojunction solar cell with molybdenum oxide hole collector

J. GeissbuehlerJ. WernerS. M. De NicolasL. BarraudA. Hessler-Wyser  et al.

Applied Physics Letters. 2015. DOI : 10.1063/1.4928747.

Solid-liquid interdiffusion (SLID) bonding in the Au-In system: experimental study and 1D modelling

L. DeillonA. Hessler-WyserT. HesslerM. Rappaz

Journal Of Micromechanics And Microengineering. 2015. DOI : 10.1088/0960-1317/25/12/125016.

Increasing Polycrystalline Zinc Oxide Grain Size by Control of Film Preferential Orientation

L. FanniA. B. AebersoldM. Morales-MasisD. T. L. AlexanderA. Hessler-Wyser  et al.

Crystal Growth & Design. 2015. DOI : 10.1021/acs.cgd.5b01299.

2014

Hydrogen plasma treatment for improved conductivity in amorphous aluminum doped zinc tin oxide thin films

M. Morales-MasisL. DingF. DauzouQ. JeangrosA. Hessler-Wyser  et al.

APL Materials. 2014. DOI : 10.1063/1.4896051.

Light-Management Strategies for Thin-Film Silicon Multijunction Solar Cells

B. NiesenJ.-W. A. SchüttaufE. A. J. MoulinS. HänniM. Boccard  et al.

2014. 6th World Conference on Photovoltaic Energy Conversation (WCPEC-6), Kyoto, Japan, November 23-27, 2014.

Self-Patterned Nanoparticle Layers for Vertical Interconnects: Application in Tandem Solar Cells

B. NiesenN. BlondiauxM. BoccardM. StuckelbergerR. Pugin  et al.

Nano Letters. 2014. DOI : 10.1021/nl501774u.

Amorphous silicon enhanced metal-insulator-semiconductor contacts for silicon solar cells

J. BullockA. CuevasD. YanB. DemaurexA. Hessler-Wyser  et al.

Journal Of Applied Physics. 2014. DOI : 10.1063/1.4900539.

In situ TEM study of reduction and reoxidation of NiO/ceramic composites

Q. Jeangros / J. Van HerleA. Hessler-Wyser (Dir.)

Lausanne, EPFL, 2014. DOI : 10.5075/epfl-thesis-6376.

Amorphous silicon passivated contacts for diffused junction silicon solar cells

J. BullockD. YanY. WanB. DemaurexA. Cuevas  et al.

Journal of Applied Physics. 2014. DOI : 10.1063/1.4872262.

2013

Interaction between liquid aluminium and solid iron Al-rich intermetallics formation

G. Pasche / A. Hessler-WyserC. Hébert (Dir.)

Lausanne, EPFL, 2013. DOI : 10.5075/epfl-thesis-6044.

Three-dimensional chemical analysis of laser-welded NiTi–stainless steel wires using a dual-beam FIB

P. BurdetJ. VannodA. Hessler-WyserM. RappazM. Cantoni

Acta Materialia. 2013. DOI : 10.1016/j.actamat.2013.01.069.

Time-Resolved X-Ray Microtomography Observation of Intermetallic Formation Between Solid Fe and Liquid Al

G. PascheM. ScheelR. SchaeublinC. HebertM. Rappaz  et al.

Metallurgical And Materials Transactions A-Physical Metallurgy And Materials Science. 2013. DOI : 10.1007/s11661-013-1788-6.

Energy-Efficient Sol-Gel Process for Production of Nanocomposite Absorber Coatings for Tubular Solar Thermal Collectors

M. JolyY. AntonettiM. PythonM. GonzalezT. Gascou  et al.

2013. CISBAT 2013, Lausanne, Switzerland, September 4-6, 2013. p. 11 - 16.

2012

A Review of RedOx Cycling of Solid Oxide Fuel Cells Anode

A. FaesA. Hessler-WyserA. ZrydJ. Van Herle

Membranes. 2012. DOI : 10.3390/membranes2030585.

Combined Cr and S poisoning in solid oxide fuel cell cathodes

J. A. SchulerH. YokokawaC. F. CalderoneQ. JeangrosZ. Wuillemin  et al.

Journal Of Power Sources. 2012. DOI : 10.1016/j.jpowsour.2011.10.123.

Nd-nickelate solid oxide fuel cell cathode sensitivity to Cr and Si contamination

J. A. SchulerH. LuebbeA. Hessler-WyserJ. Van Herle

Journal Of Power Sources. 2012. DOI : 10.1016/j.jpowsour.2012.03.112.

Silicon Filaments in Silicon Oxide for Next-Generation Photovoltaics

P. CuonyD. T. L. AlexanderI. Perez-WurflM. DespeisseG. Bugnon  et al.

Advanced Materials. 2012. DOI : 10.1002/adma.201104578.

Cr-poisoning in (La,Sr)(Co,Fe)O-3 cathodes after 10,000 h SOFC stack testing

J. A. SchulerZ. WuilleminA. Hessler-WyserC. CommingesN. Y. Steiner  et al.

Journal Of Power Sources. 2012. DOI : 10.1016/j.jpowsour.2012.03.045.

UV-nanoimprint lithography and large area roll-to-roll texturization with hyperbranched polymer nanocomposites for light-trapping applications

M. González LazoR. TeuscherY. LeterrierJ.-A. E. MånsonC. Calderone  et al.

Solar Energy Materials and Solar Cells. 2012. DOI : 10.1016/j.solmat.2012.04.034.

Three-dimensional microstructural changes in the Ni-YSZ solid oxide fuel cell anode during operation

G. J. NelsonK. N. GrewJ. R. IzzoJ. J. LombardoW. M. Harris  et al.

Acta Materialia. 2012. DOI : 10.1016/j.actamat.2012.02.041.

2011

Nd-Nickelate Solid Oxide Fuel Cell Cathode Sensitivity to Cr and Si Contamination

J. A. SchulerH. LübbeA. Hessler-WyserJ. Van Herle

2011. European Fuel Cell Forum 2011.

Laser Welding of Nickel-Titanium and Stainless Steel Wires : Processing, Metallurgy and Properties

J. Vannod / M. RappazA. Hessler-Wyser (Dir.)

Lausanne, EPFL, 2011. DOI : 10.5075/epfl-thesis-5120.

Glass-Forming Exogenous Silicon Contamination in Solid Oxide Fuel Cell Cathodes

J. A. SchulerZ. WuilleminA. HesslerJ. Van Herle

Electrochemical and Solid State Letters. 2011. DOI : 10.1149/1.3516622.

TEM investigation on zirconate formation and chromium poisoning in LSM/YSZ cathode

A. Hessler-WyserZ. WuilleminJ. A. SchulerA. FaesJ. Van herle

Journal of Materials Science. 2011. DOI : 10.1007/s10853-011-5347-5.

Air Side Contamination in Solid Oxide Fuel Cell Stack Testing

J. A. SchulerC. GehrigZ. WuilleminA. J. SchulerJ. Wochele  et al.

Journal of Power Sources. 2011. DOI : 10.1016/j.jpowsour.2010.10.058.

Multi-Scale Assessment of Cr Contamination Levels in SOFC Cathode Environment

J. A. SchulerA. J. SchulerZ. WuilleminA. Hessler-WyserC. Ludwig  et al.

2011. 12th International Symposium on Solid Oxide Fuel Cells (SOFC), Montreal, CANADA, May 01-06, 2011. DOI : 10.1149/1.3570190.

Mechanical and microstructural integrity of nickel-titanium and stainless steel laser joined wires

J. VannodM. BornertJ.-E. BidauxL. BataillardA. Karimi  et al.

Acta Materialia. 2011. DOI : 10.1016/j.actamat.2011.06.031.

Mitigating Cr Contamination by Hot Air Filtering in Solid Oxide Fuel Cells

J. A. SchulerA. J. SchulerD. PennerA. Hessler-WyserC. Ludwig  et al.

Electrochemical and Solid State Letters. 2011. DOI : 10.1149/2.002112esl.

Design of experiment approach applied to reducing and oxidizing tolerance of anode supported solid oxide fuel cell. Part II: Electrical, electrochemical and microstructural characterization of tape-cast cells

A. FaesZ. WuilleminP. TanasiniN. AccardoS. Modena  et al.

Journal of Power Sources. 2011. DOI : 10.1016/j.jpowsour.2010.11.146.

Design of experiment approach applied to reducing and oxidizing tolerance of anode supported solid oxide fuel cell. Part I: Microstructure optimization

A. FaesJ.-M. FuerbringerD. MohamediA. Hessler-WyserG. Caboche  et al.

2011. 9th European SOFC Forum, Lucerne, SWITZERLAND, Jun 29-Jul 02, 2010. p. 7058 - 7069. DOI : 10.1016/j.jpowsour.2010.07.092.

2010

Air Side Contamination in SOFC Stack Testing

J. A. SchulerC. GehrigZ. WuilleminA. J. SchulerJ. Wochele  et al.

2010. European Fuel Cell Forum 2010, Luzern, Schweiz, July, 2010. p. 114 - 130.

Modification of textured silicon wafer surface morphology for fabrication of heterojunction solar cell with open circuit voltage over 700mV

L. FesquetS. OlibetJ. Damon-LacosteS. De-WolfA. Hessler-Wyser  et al.

2010. 34th IEEE PVSC, Philadelphia, PA, 2009. p. 000754 - 000758. DOI : 10.1109/PVSC.2009.5411173.

Fabrication et caractérisation de pile à combustible SOFC : influence de la microstructure des électrodes

S. Kerrache

2010

In situ redox cycle of a nickel-YSZ fuel cell anode in an environmental transmission electron microscope

Q. JeangrosA. FaesJ. B. WagnerT. W. HansenU. Aschauer  et al.

Acta Materialia. 2010. DOI : 10.1016/j.actamat.2010.04.019.

Cathode thickness-dependent tolerance to Cr-poisoning in solid oxide fuel cells

J. A. SchulerP. TanasiniA. HesslerC. ComninellisJ. Van Herle

Electrochemistry Communications. 2010. DOI : 10.1016/j.elecom.2010.09.024.

Rapid chromium quantification in solid oxide fuel cell cathodes

J. A. SchulerP. TanasiniA. HesslerJ. Van herle

Scripta Materialia. 2010. DOI : 10.1016/j.scriptamat.2010.06.046.

Analyse des polluants d'une pile à combustible à oxyde solide (SOFC)

C. Gehrig

2010

Properties of interfaces in amorphous/crystalline silicon heterojunctions

S. OlibetE. Vallat-SauvainL. FesquetC. MonachonA. Hessler-Wyser  et al.

Physica Status Solidi (a). 2010. DOI : 10.1002/pssa.200982845.

2009

Ni/YSZ cermet anode degradation modelling and novel image analysis method for the quantification of the three-phase-boundary length

D. PresvytesA. FaesA. Hessler-WyserC. VayenasJ. Van Herle

2009. 7th Panhellenic Scientific Chemical Engineering Conference, Patras, June 3-5, 2009.

Characterisation of Laser Welds, between Nitinol and Stainless Steel Wires

J. VannodA. Hessler-WyserM. Rappaz

Microscopy Conference 2009, Graz, August 30-September 4, 2009.

Solid oxide fuel cell redox instability characterized by in situ transmission electron microscopy

Q. JeangrosA. FaesJ. WagnerT. HansenR. Dunin-Borkowski  et al.

11ème colloque de la Société Français des Microscopies, Paris, June 22-26, 2009.

In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM

A. FaesQ. JeangrosJ. B. WagnerT. W. HansenJ. Van herle  et al.

SOFC-XI, Vienna, October 4-9, 2009.

Characterisation of Laser Welds, between Nitinol and Stainless Steel Wires

J. VannodA. Hessler-WyserM. Rappaz

2009. p. 255 - 256.

In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM

Q. JeangrosA. FaesJ. WagnerA. Hessler-WyserJ. Van herle

2009. Microscopy Conference 2009, Graz, August 30-September 4, 2009. p. 521 - 522.

Nickel-Zirconia Anode Degradation and Triple Phase Boundary Quantification from Microstructural Analysis

A. FaesA. Hessler-WyserD. PresvytesC. G. VayenasJ. Van herle

Fuel Cells. 2009. DOI : 10.1002/fuce.200800147.

Experimental and Theoretical Investigation of Degradation Mechanisms in SOFC Electrodes

P. TanasiniM. CannarozzoP. CostamagnaA. FaesJ. Van herle  et al.

Fuel Cells. 2009. DOI : 10.1002/fuce.200800192.

RedOx study of anode supported solid oxide fuel cell

A. FaesA. NakajoA. Hessler-WyserD. DuboisA. Brisse  et al.

Journal of Power Sources. 2009. DOI : 10.1016/j.jpowsour.2008.12.118.

In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM

Q. JeangrosA. FaesJ. WagnerA. Hessler-WyserJ. Van herle  et al.

Microscopy Conference 2009, Graz, August 30- September 4, 2009.

Sulfur as pollutant species on the cathode side of a SOFC system

A. SchulerZ. WuillementA. Hessler-WyserJ. Van herler

2009. Microscopy Conference 2009, Graz, August 30-September 4, 2009. p. 321 - 322.

In situ Reduction and Oxidation of Nickel from Solid Oxide Fuel Cells in a Transmission Electron Microscope

A. FaesQ. JeangrosJ. B. WagnerT. W. HansenJ. Van herle  et al.

ECS Transactions. 2009. DOI : 10.1149/1.3205743.

2008

Quantitative study of anode microstructure related to SOFC stack degradation

A. FaesA. Hessler-WyserD. PresvytesA. BrisseC. G. Vayena  et al.

14th European Microscopy Congress, Aachen, September 1-5, 2008..

Textured silicon heterojunction solar cells with over 700mV open-circuit voltage studied by transmission electron microscopy

S. OlibetC. MonachonA. Hessler-WyserE. Vallat-SauvainL. Fesquet  et al.

2008. 23 EUPVSEC, Valencia, September 1-5, 2008. DOI : 10.4229/23rdEUPVSEC2008-2DO.1.2.

Redox study of anode supported solid oxide fuel cell

A. FaesA. Hessler-WyserA. BrisseS. ModenaJ. Van herle

Fuel Cells Science and Technology 2008, Copenhagen, October 8-9, 2008.

TEM characterization of textured silicon heterojunction solar cells

A. Hessler-WyserC. MonachonS. OllibetC. Ballif

EMC2008, Aachen, September 1-5, 2008.

Quantitative study of Ni-zirconia anode micro- and nanostructure related to SOFC stack degradation

A. FaesA. Hessler-WyserD. PresvytesA. BrisseG. C. Vayenas  et al.

6th NanoEurope Congress, St-Gallen, September 16-17, 2008.

TEM characterization of textured silicon heterojunction solar cells

A. Hessler-WyserC. MonachonS. OlibetC. Ballif

2008. 14th European Microscopy Congress. p. 335 - 336. DOI : 10.1007/978-3-540-85226-1_168.

Rapid preparation and SEM microstructural characterization of nickel-yttria- stabilized zirconia cermets

C. MonachonA. Hessler-WyserA. FaesJ. Van HerleE. Tagliaferri

Journal of the American Ceramic Society. 2008. DOI : 10.1111/j.1551-2916.2008.02538.x.

Quantitative study of anode microstructure related to SOFC stack degradation

A. FaesA. Hessler-WyserD. PresvytesA. BrisseC. G. Vayenas  et al.

2008. 14th European Microscopy Congress, Aachen, September 1-5, 2008. p. 763 - 764. DOI : 10.1007/978-3-540-85156-1_382.

Nd:YAG laser joining between stainless steel and nickel-titanium shape memory alloys

J. VannodA. Hessler-WyserM. Rappaz

2008. 14th European Microscopy Congress, Aachen, September 1-5, 2008. p. 501 - 502. DOI : 10.1007/978-3-540-85226-1_251.

2007

Reduction and Oxidation Study of Anode Supported Solid Oxide Fuel Cell

A. FaesA. Hessler-WyserC. MonachonM. ZahidE. Tagliaferri  et al.

Euromat2007, Nürnberg, Germany, 10-13 September 2007.

Methods for quantification of anode support microstructure

A. FaesA. Hessler-WyserC. MonachonM. ZahidE. Tagliaferri  et al.

4th Real-SOFC Workshop, Grenoble, France, 10-11 July 2007.

Étude de Réduction et d’Oxydation de l’Anode d’une Pile à Combustible à Oxyde Solide à Support Anode (SOFC)

A. FaesA. Hessler-WyserC. LalanneM. ChristianM. Zahid  et al.

Xème Colloque de la Société Française des Microscopie (SFmu-2007), Grenoble, France, 5-8 June 2007.

2004

Use of quantitative EELS and cathodoluminescence for study of carrier confinement and diffusion in self organized vertical quantum wells

K. LeiferS. MautinoH. WemanA. RudraE. Pelucchi  et al.

Design and Nature. 2004.

2003

Silver thick-film contacts on high doped n-type silicon emitters : Structural and electronic properties of the interface

C. BallifD. HuljicG. WillekeA. Hessler-Wyser

Applied Physics Letters. 2003. DOI : 10.1063/1.1562338.

Nature of the Ag-Si Interface in Screen Printed Contacts: A Detailed Transmission Electron Microscopy Study of Cross-Sectional Structures

C. BallifD. M. HuljicA. Hessler-WyserG. Willeke

2003. 29th IEEE Photovoltaic Specialists Conference 2002, New Orleans, May 20-24, 2002. p. 360 - 363. DOI : 10.1109/PVSC.2002.1190533.

Use of quantitative EELS and cathodoluminescence for study of carrier confinement and diffusion in self organised vertical quantum wells

A. G. CullisP. A. MidgleyK. LeiferS. MautinoH. Weman  et al.

2003. Microscopy of Semiconducting Materials, Cambridge, 31 March-3 April 2003. p. 131 - 134. DOI : 10.1201/9781351074636-30.

Microstructural analysis of Ag thick-film contacts on n-type silicon emitters

D. HuljicC. BallifA. Hessler-WyserG. Willeke

2003. 3rd World Conference on Photovoltaic Energy Conversion 2003, Osaka, May 11 - 18 , 2003. p. 83 - 86.

Microstructure at submicron scale of the white layer produced by EDM machinig

G. CusanelliA. Hessler-WyserF. BobardR. DemellayerR. Perez  et al.

2003. 14th International Symposium on Electromachining (ISEM XIV). p. 289 - 295. DOI : 10.1016/j.jmatprotec.2003.11.047.

2001

TEM Studies of In-Situ Martensitic Transformation in NiTi Thin Films

S. CrevoiseratT. LehnertA. Hessler-WyserR. Gotthardt

Journal de Physique IV. 2001. DOI : 10.1051/jp4:2001869.

Multilayered phase formation after high-fluence implantation of nickel into aluminium

A. Hessler-WyserA. CuenatM. DoebeliC. AbromeitR. Gotthardt

Philosophical Magazine Letters. 2001. DOI : 10.1080/09500830110085000.

1999

Etude de zones amorphes induites dans l'aluminium par implantation de nickel

A. Hessler-Wyser / R. Gotthardt (Dir.)

Lausanne, EPFL, 1999. DOI : 10.5075/epfl-thesis-1966.

Enseignement et PhD

Doctorant·es actuel·les

Marie Amélie Camille Courtant, Chiara Ongaro, Mostafa Othman, Yu-Hsuan Lai

A dirigé les thèses EPFL de

Guillaume Pasche, Federica Landucci, Jonathan Thomet, Caroline Hain, Sofia Libraro

A co-dirigé les thèses EPFL de

Antonin Faes, Jonas Vannod, Josef Andreas Schuler, Léa Deillon, Quentin Jeangros

Cours

Introduction à la microscopie + TP

MSE-352

Ce cours d'introduction à la microscopie a pour but de donner un apperçu des différentes techniques d'analyse de la microstructure et de la composition des matériaux, en particulier celles liées aux microscopies électronique et optique. Le cours comprend des cours ainsi que des démonstrations.