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Christian Michael Wolff

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Related publications (32)

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Advancing high-throughput combinatorial aging studies of hybrid perovskite thin films via precise automated characterization methods and machine learning assisted analysis

Christian Michael Wolff, Austin George Kuba

To optimize material stability, automated high-throughput workflows are of increasing interest. However, many of those workflows either employ synthesis techniques not suitable for large-area depositions or are carried out in ambient conditions, which limi ...

Royal Society of Chemistry2024

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

Christophe Ballif, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Mostafa Rabie Shlaly Bahr Othman, Daniel Anthony Jacobs, Christian Michael Wolff, Anaël Morgane Jaffrès, Austin George Kuba

The technique of alloying FA+ with Cs+ is often used to promote structural stabilization of the desirable alpha-FAPbI3 phase in halide perovskite devices. However, the precise mechanisms by which these alloying approaches improve the optoelectronic quality ...

Royal Soc Chemistry2024

Accelerating Optimization of Halide Perovskites: Two Blueprints for Automation

Christophe Ballif, Daniel Anthony Jacobs, Nicolas Fürst, Christian Michael Wolff, Hilal Aybike Can

The fine-tuning of halide perovskite materials for both performance and stability calls for innovative tools that streamline high-throughput experimentation. Here, we present two complementary systems designed to accelerate the development of solution-proc ...

2025

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

Christophe Ballif, Aïcha Hessler-Wyser, Mostafa Rabie Shlaly Bahr Othman, Kerem Artuk, Christian Michael Wolff, Austin George Kuba

Vapor phase deposition of formamidinium-rich perovskites is hampered by the decomposition of formamidine in the vapor phase. We use the reversibility of this reaction to establish a dynamic equilibrium that enables the vapor-phase synthesis of formamidiniu ...

American Chemical Society (ACS)2025

Towards stable perovskite-silicon tandem solar cells: from nanometer- to wafer-scale

Christian Michael Wolff

FUNDACIO DE LA COMUNITAT VALENCIANA SCITO2024

Point contacts in halide perovskite solar cells: from reduced interfacial recombination to increased ionic field screening

Christian Michael Wolff, Jonas Lasse Diekmann

Inserting point contacts between the perovskite and C60 layers reduces the interfacial recombination. However, the accumulation of mobile ions at the point contacts can decrease the device stability. ...

Royal Society of Chemistry (RSC)2025

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

Christophe Ballif, Aïcha Hessler-Wyser, Mostafa Rabie Shlaly Bahr Othman, Kerem Artuk, Deniz Türkay, Christian Michael Wolff

Microscale pyramids of silicon solar cells are often considered incompatible with solution-processed perovskite films. Thus, solution processing has mainly been used with submicron pyramids that are buried under thick perovskite films with flattened front ...

AMER CHEMICAL SOC2025

Aryl-Acetylene Layered Hybrid Perovskites in Photovoltaics

Christophe Ballif, Aïcha Hessler-Wyser, Michael Graetzel, Ursula Röthlisberger, Mostafa Rabie Shlaly Bahr Othman, Masaud Hassan S Almalki, Fatemeh Ansari, Felix Thomas Eickemeyer, Ghewa Alsabeh, Lukas Pfeifer, Christian Michael Wolff, Nikolaos Lempesis, Virginia Carnevali, Vladislav Slama, Andrea Vezzosi

Metal halide perovskites have shown exceptional potential in converting solar energy to electric power in photovoltaics, yet their application is hampered by limited operational stability. This stimulated the development of hybrid layered (two-dimensional, ...

WILEY-V C H VERLAG GMBH2025

Bifacial perovskite/silicon heterojunction tandem solar cells based on FAPbI3-based perovskite via hybrid evaporation-spin coating

Christophe Ballif, Aïcha Hessler-Wyser, Mounir Driss Mensi, Mostafa Rabie Shlaly Bahr Othman, Kerem Artuk, Deniz Türkay, Christian Michael Wolff, Mohammadreza Golobostanfard

Combining the two technologies of tandem solar cells and bifacial solar cells has a great potential to maximize energy harvesting while minimizing material and surface usage. Mid-bandgap perovskites (1.50–1.60 eV) are important for fulfilling current match ...

Elsevier2024

Christian Michael Wolff

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Advancing high-throughput combinatorial aging studies of hybrid perovskite thin films via precise automated characterization methods and machine learning assisted analysis

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

Accelerating Optimization of Halide Perovskites: Two Blueprints for Automation

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

Towards stable perovskite-silicon tandem solar cells: from nanometer- to wafer-scale

Point contacts in halide perovskite solar cells: from reduced interfacial recombination to increased ionic field screening

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

Aryl-Acetylene Layered Hybrid Perovskites in Photovoltaics

Bifacial perovskite/silicon heterojunction tandem solar cells based on FAPbI3-based perovskite via hybrid evaporation-spin coating

Towards stable perovskite multijunction solar cells: from nanometer- to wafer-scale

Hybrid Sequential Process for Perovskite Absorbers Growth by Pulsed Laser Deposition (PLD)

Monolithic Two-Terminal Perovskite/Perovskite/Silicon Triple-Junction Solar Cell with Open Circuit Voltage > 3.0 V