Modeling the Shape Evolution of Selective Area Grown Zn3P2 Nanoislands

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Crystalline Order in Compound Semiconductors in Nanoscale Structures and Thin Films

Semiconductors materials and devices are essential building blocks for many of the technologies deeply embedded in modern life. Improving the performance of semiconductor devices requires a deeper understanding of the fundamental mechanisms controlling the ...

EPFL2021

Simultaneous Selective Area Growth of Wurtzite and Zincblende Self-Catalyzed GaAs Nanowires on Silicon

Anna Fontcuberta i Morral, Lucas Güniat, Valerio Piazza, Wonjong Kim, Vladimir Dubrovskii

Selective area epitaxy constitutes a mainstream method to obtain reproducible nanomaterials. As a counterpart, self-assembly allows their growth without costly substrate preparation, with the drawback of uncontrolled positioning. We propose a mixed approac ...

American Chemical Society (ACS)2021

Interfacial Effects in Hybrid Perovskite Solar Cells : Insights from First Principles Studies

Farzaneh Jahanbakhshi

Development of sustainable energy sources is among the most urgent needs of modern society. Solar energy technologies, and in particular, hybrid perovskite solar cells (HPSCs), have demonstrated hard-to-beat performances with large capacities for improveme ...

EPFL2021

Showcasing the optical properties of monocrystalline zinc phosphide thin films as an earth-abundant photovoltaic absorber

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Jean-Baptiste Leran, Mahdi Zamani, Simon Robert Escobar Steinvall, Rajrupa Paul, Mirjana Dimitrievska, Léa Buswell

Zinc phosphide, Zn3P2, is a semiconductor with a high absorption coefficient in the spectral range relevant for single junction photovoltaic applications. It is made of elements abundant in the Earth's crust, opening up a pathway for large deployment of so ...

2022

Cu/Metal Oxide Hybrid Nanocrystals as Electrocatalysts for the CO2 Reduction Reaction

Seyedehbehnaz Varandili

The electrochemical CO2 reduction reaction (CO2RR) is envisioned to play a significant role in achieving carbon neutrality while contributing to storing renewable energies. Cu-based materials are among the most promising electrocatalysts. However, 16 diffe ...

EPFL2021

Time- and Angle-Resolved Photoelectron Spectroscopy of Solar Materials

Serhii Polishchuk

Natural foundations defining the manner in which a solid material interacts with optical radiation are primarily encoded in the material's momentum-dependent band structure and the microscopic details of the electron-lattice interactions. An access to this ...

EPFL2021

van der Waals Epitaxy of Earth-Abundant Zn3P2 on Graphene for Photovoltaics

Anna Fontcuberta i Morral, Roland Logé, Cyril Cayron, Elias Zsolt Stutz, Jean-Baptiste Leran, Shreyas Sanjay Joglekar, Mahdi Zamani, Simon Robert Escobar Steinvall, Rajrupa Paul, Nicolas Philippe Laurent Humblot

Earth-abundant semiconducting materials are a potential solution for large-scale deployment of solar cells at a lower cost. Zinc phosphide (Zn3P2) is one such Earth-abundant material with optoelectronic properties suitable for photovoltaics. Herein, we rep ...

2020

Heterotwin Zn3P2 superlattice nanowires: the role of indium insertion in the superlattice formation mechanism and their optical properties

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Jean-Baptiste Leran, Mahdi Zamani, Simon Robert Escobar Steinvall, Nicolas Tappy, Rajrupa Paul, Reza Zamani, Lea Ghisalberti

Zinc phosphide (Zn3P2) nanowires constitute prospective building blocks for next generation solar cellsdue to the combination of suitable optoelectronic properties and an abundance of the constitutingelements in the Earth’s crust. The generation of periodi ...

2020

Growth and characterisation of earth-abundant semiconductor nanostructures for solar energy harvesting

Simon Robert Escobar Steinvall

Zinc phosphide (Zn3P2) is a compound semiconductor based on earth-abundant elements with functional properties ideal for solar cell applications. Cheap, abundant, and renewable energy sources are increasingly imperative due to the imminent threat posed by ...

EPFL2020

alpha-CsPbI(3)Bilayers via One-Step Deposition for Efficient and Stable All-Inorganic Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Yong Ding, Olga Syzgantseva, Xianfu Zhang, Cheng Liu

The emerging inorganic CsPbI(3)perovskites are promising wide-bandgap materials for application in tandem solar cells, but they tend to transit from a black alpha phase to a yellow delta phase in ambient conditions. Herein, a gradient grain-sized (GGS) CsP ...

Wiley2020

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Showcasing the optical properties of monocrystalline zinc phosphide thin films as an earth-abundant photovoltaic absorber

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Jean-Baptiste Leran, Mahdi Zamani, Simon Robert Escobar Steinvall, Rajrupa Paul, Mirjana Dimitrievska, Léa Buswell

2022

Heterotwin Zn3P2 superlattice nanowires: the role of indium insertion in the superlattice formation mechanism and their optical properties

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Jean-Baptiste Leran, Mahdi Zamani, Simon Robert Escobar Steinvall, Nicolas Tappy, Rajrupa Paul, Reza Zamani, Lea Ghisalberti

2020

Growth and characterisation of earth-abundant semiconductor nanostructures for solar energy harvesting

Simon Robert Escobar Steinvall

EPFL2020

alpha-CsPbI(3)Bilayers via One-Step Deposition for Efficient and Stable All-Inorganic Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Yong Ding, Olga Syzgantseva, Xianfu Zhang, Cheng Liu

Wiley2020