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Anna Fontcuberta i Morral

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Related publications (286)

Hyperspectral fitting using hyperspy

Christian Monachon, Anna Fontcuberta i Morral, Nicolas Tappy

This version includes updates to use weighted PCA in heteroscedastic noise estimation. This set of Jupyter notebooks are used in the analysis of hyperspectral datasets with the hyperspy library. The file "clmap_type-IIB_HPHT_diamond-spikes_removed.hspy" ...

Zenodo2021

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

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

Optical properties and carrier dynamics in Co-doped ZnO nanorods (vol 3, pg 214, 2021)

Anna Fontcuberta i Morral, Nicolas Tappy, Simon Robert Escobar Steinvall, Aswathi Kanjampurath Sivan

2021

GaAs nanoscale membranes: prospects for seamless integration of III-Vs on silicon

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Martin George Friedl, Luca Francaviglia, Nicholas Paul Morgan, Andres Maria Raya Bejarano, Sara Marti Sanchez, Vladimir Dubrovskii

The growth of compound semiconductors on silicon has been widely sought after for decades, but reliable methods for defect-free combination of these materials have remained elusive. Recently, interconnected GaAs nanoscale membranes have been used as templa ...

2020

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

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

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

Facet-driven formation of axial and radial In(Ga)As clusters in GaAs nanowires

Anna Fontcuberta i Morral, Jean-Baptiste Leran, Lucas Güniat, Nicolas Tappy, Martin George Friedl, Wonjong Kim, Santhanu Panikar Ramanandan, Akshay Balgarkashi, Didem Dede

Embedding quantum dots in nanowires (NWs) constitutes one promising building block for quantum photonic technologies. Earlier attempts to grow InAs quantum dots on GaAs nanowires were based on the Stranski-Krastanov growth mechanism. Here, we propose a nov ...

2020

Measuring the Optical Absorption of Single Nanowires

Anna Fontcuberta i Morral, Wonjong Kim, Simon Robert Escobar Steinvall

In this work we present a method to quantitatively measure the optical absorption of single nanowires that can be applied over a wide range of temperatures and with a high enough sensitivity to enable the measurement of below-band-gap absorption (as well a ...

American Physical Society (APS)2020

Nanostructured alloys light the way to silicon-based photonics

Anna Fontcuberta i Morral

Silicon used for electronics has a cubic crystal lattice, which makes the material unsuitable for photonics applications. A method for producing germanium and silicon-germanium alloys that have hexagonal lattices offers a solution. ...

NATURE PUBLISHING GROUP2020

Dataset for "Towards defect-free thin films of the earth-abundant absorber zinc phosphide by nanopatterning"

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Jean-Baptiste Leran, Reza Zamani, Martin George Friedl, Mahdi Zamani, Simon Robert Escobar Steinvall, Rajrupa Paul, Valerio Piazza

Raw data associated with the publication "Towards defect-free thin films of the earth-abundant absorber zinc phosphide by nanopatterning", first published in Nanoscale Advances on the 23nd November 2020. ...

Zenodo2020

Plasma-enhanced atomic layer deposition of nickel nanotubes with low resistivity and coherent magnetization dynamics for 3D spintronics

Anna Fontcuberta i Morral, Dirk Grundler, Maria Carmen Giordano, Julien Gay, Simon Robert Escobar Steinvall

We report plasma-enhanced atomic layer deposition (ALD) to prepare conformal nickel thin films and nanotubes by using nickelocene as a precursor, water as the oxidant agent and an in-cycle plasma enhanced reduction step with hydrogen. The optimized ALD pul ...

2020

Dataset for "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, Nicolas Tappy, Reza Zamani, William Craig Carter, Mahdi Zamani, Lea Ghisalberti, Simon Robert Escobar Steinvall, Rajrupa Paul

Raw data associated with the publication "Heterotwin Zn3P2 superlattice nanowires: the role of indium insertion in the superlattice formation mechanism and their optical properties", published in Nanoscale on the 22nd October 2020. ...

Zenodo2020

Multiple morphologies and functionality of nanowires made from earth-abundant zinc phosphide

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

Semiconductors made of earth-abundant elements, such as zinc phosphide, have the potential to substitute less abundant, highly functional compound semiconductors such as InAs or InP. Compound semiconductors in the form of nanowires could revolutionise appl ...

2020

Time-resolved open-circuit conductive atomic force microscopy for direct electromechanical characterisation

Anna Fontcuberta i Morral, Jelena Vukajlovic Plestina, Wonjong Kim

Studying nanomaterial piezoelectricity and triboelectricity is attractive for energy and sensing applications. However, quantitative characterisation of electromechanical effects in nanomaterials is challenging due to practical limitations and possible com ...

2020

3D Ordering at the Liquid-Solid Polar Interface of Nanowires

Cécile Hébert, Duncan Thomas Lindsay Alexander, Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Nicolas Tappy, Martin George Friedl, Michele Ceriotti, Luca Francaviglia, Giulio Imbalzano, Mahdi Zamani, Lea Ghisalberti, Sara Marti Sanchez

The nature of the liquid-solid interface determines the characteristics of a variety of physical phenomena, including catalysis, electrochemistry, lubrication, and crystal growth. Most of the established models for crystal growth are based on macroscopic t ...

Wiley2020

Dataset for "Raman spectroscopy and lattice dynamics calculations of tetragonally-structured single crystal zinc phosphide (Zn3P2) nanowires"

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

Earth-abundant and low-cost semiconductors, such as zinc phosphide (Zn3P2), are promising candidates for the next generation photovoltaic applications. However, synthesis on commercially available substrates, which favors the formation of defects, and cont ...

Zenodo2020

In-situ reflectometry to monitor locally-catalyzed initiation and growth of nanowire assemblies

Anna Fontcuberta i Morral

We investigate in-situ laser reflectometry for measuring the axial growth rate in chemical vapor deposition of assemblies of well-aligned vertical germanium nanowires grown epitaxially on single crystal substrates. Finite difference frequency domain optica ...

IOP PUBLISHING LTD2020

Remote Doping of Scalable Nanowire Branches

Anna Fontcuberta i Morral, Lucas Güniat, Martin George Friedl, Nicholas Paul Morgan, Wonjong Kim, Didem Dede

Selective-area epitaxy provides a path toward high crystal quality, scalable, complex nanowire networks. These high-quality networks could be used in topological quantum computing as well as in ultrafast photodetection schemes. Control of the carrier densi ...

2020

Rational strain engineering in delafossite oxides for highly efficient hydrogen evolution catalysis in acidic media

Anna Fontcuberta i Morral, Esther Alarcon Llado, Filip Mateusz Podjaski

The rational design of catalysts is crucial to make power-to-X technologies viable. Here the authors introduce the delafossite PdCoO2 as a highly active hydrogen evolution reaction catalyst due to the growth of a tensile-strained Pd-rich capping layer unde ...

NATURE PUBLISHING GROUP2020

Dataset for "Measuring the Optical Absorption of Single Nanowires"

Anna Fontcuberta i Morral, Wonjong Kim, Simon Robert Escobar Steinvall

Zenodo2020

Facet-driven formation of axial and radial In(Ga)As clusters in GaAs nanowires

Anna Fontcuberta i Morral, Jean-Baptiste Leran, Lucas Güniat, Nicolas Tappy, Martin George Friedl, Nicholas Paul Morgan, Wonjong Kim, Santhanu Panikar Ramanandan, Akshay Balgarkashi, Didem Dede

Raw dataset and image files used for the publication ...

2020

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