Publications de Anna Dalmau Mallorquí

Current and friction transients during tribocorrosion of a biomedical titanium alloy sliding against zirconia

Stefano Mischler, Anna Neus Igual Muñoz, Anna Dalmau Mallorquí

The tribocorrosion mechanisms of a Ti-Nb-Zr-Ta (TNZT) alloy rubbing against a zirconia ball in a Phosphate Buffered Solution (PBS) were analyzed by considering the mechanical and chemical interactions that lead to the material degradation. To understand th ...

ELSEVIER SCIENCE SA2023

Field-effect passivation on silicon nanowire solar cells (vol 8, pg 673, 2015)

Bénédicte Demaurex, Anna Fontcuberta i Morral, Stefaan De Wolf, Anna Dalmau Mallorquí, Amirreza Kiani

Surface recombination represents a handicap for high-efficiency solar cells. Surface recombination represents a handicap for high-efficiency solar cells. This is especially important for nanowire array solar cells, where the surface-to-volume ratio is grea ...

Tsinghua Univ Press2016

Polymer Brush Guided Formation of Conformal, Plasmonic Nanoparticle-Based Electrodes for Microwire Solar Cells

Harm-Anton Klok, Caroline Sugnaux, Anna Fontcuberta i Morral, Anna Dalmau Mallorquí

This report explores the use of sacrificial thin polymer films prepared by surface-initiated polymerization as a template for the fabrication of highly conformal metal nanoparticle solar cell electrodes. As a first proof-of-principle, the use of this metho ...

Wiley-Blackwell2015

Field-effect passivation on silicon nanowire solar cells

Bénédicte Demaurex, Anna Fontcuberta i Morral, Stefaan De Wolf, Anna Dalmau Mallorquí, Amirreza Kiani, Esther Alarcon Llado

Surface recombination represents a handicap for high-efficiency solar cells. This is especially important for nanowire array solar cells, where the surface-to-volume ratio is greatly enhanced. Here, the effect of different passivation materials on the effe ...

Tsinghua Univ Press2015

High Yield of GaAs Nanowire Arrays on Si Mediated by the Pinning and Contact Angle of Ga

Anna Fontcuberta i Morral, Anna Dalmau Mallorquí, Gözde Tütüncüoglu, Sonia Conesa Boj, Eleonora Russo, Federico Matteini, Jelena Vukajlovic Plestina, Heidi Andrea Potts

GaAs nanowire arrays on Silicon offer great perspectives in the :optoeleetronics and solar cell industry. To fulfill this potential, gold-free growth in predetermined positions should be achieved. Ga-assisted growth of GaAs nano-wires in the form of array ...

American Chemical Society2015

Bottom-up engineering of InAs at the nanoscale: From V-shaped nanomembranes to nanowires

Anna Fontcuberta i Morral, Anna Dalmau Mallorquí, Gözde Tütüncüoglu, Sonia Conesa Boj, Eleonora Russo, Ignasi Canales Mundet

The ability to rationally tune the morphology of nanostructures is a fundamental milestone in nanoscale engineering. In particular, the possibility to switch between different shapes within the same material system represents a further step in the developm ...

Elsevier2015

Characterization and analysis of InAs/p-Si heterojunction nanowire-based solar cell

Anna Fontcuberta i Morral, Anna Dalmau Mallorquí, Gözde Tütüncüoglu, Esther Alarcon Llado, Eleonora Russo, Federico Matteini

The growth of compound semiconductor nanowires on the silicon platform has opened many new perspectives in the area of electronics, optoelectronics and photovoltaics. We have grown a 1 x 1 mm(2) array of InAs nanowires on p-type silicon for the fabrication ...

Institute of Physics2014

III-V nanowire arrays: growth and light interaction

Anna Fontcuberta i Morral, Martin Heiss, Anna Dalmau Mallorquí, Gözde Tütüncüoglu, Sonia Conesa Boj, Esther Alarcon Llado, Eleonora Russo, Federico Matteini

Semiconductor nanowire arrays are reproducible and rational platforms for the realization of high performing designs of light emitting diodes and photovoltaic devices. In this paper we present an overview of the growth challenges of III-V nanowire arrays o ...

Institute of Physics2014

Nanowire-based solar cells : device design and implementation

Anna Dalmau Mallorquí

EPFL2014

Electrical contacts to single nanowires: a scalable method allowing multiple devices on a chip. Application to a single nanowire radial p-i-n junction

Anna Fontcuberta i Morral, Carlo Colombo, Martin Heiss, Anna Dalmau Mallorquí, Pierre Loïc Blanc

Semiconductor nanowires are currently at the forefront of research in the areas of nanoelectronics and energy conversion. In all these studies, realising electrical contacts and statistically relevant measurements is a key issue. We propose a method that e ...

Inderscience2013

Semiconductor nanowires for efficient, sustainable solar energy harvesting

Anna Fontcuberta i Morral, Martin Heiss, Anna Dalmau Mallorquí

SPIE-Intl Soc Optical Eng2013

Growth mechanisms and process window for InAs V-shaped nanoscale membranes on Si[001]

Anna Fontcuberta i Morral, Martin Heiss, Anna Dalmau Mallorquí, Gözde Tütüncüoglu, Sonia Conesa Boj, Esther Alarcon Llado, Eleonora Russo, Ignasi Canales Mundet

Organized growth of high aspect-ratio nanostructures such as membranes is interesting for opto-electronic and energy harvesting applications. Recently, we reported a new form of InAs nano-membranes grown on Si substrates with enhanced light scattering prop ...

Institute of Physics2013

Enhanced second harmonic generation from InAs nano-wing structures on silicon

Anna Fontcuberta i Morral, Anna Dalmau Mallorquí, Eleonora Russo, Ignasi Canales Mundet

We demonstrate morphology-dependent second-harmonic generation (SHG) from InAs V-shaped nanomembranes. We show SHG correlation with the nano-wing shape and size, experimentally quantify the SHG efficiency, and demonstrate a maximum SHG enhancement of about ...

Royal Society of Chemistry2013

Vertical "III-V" V-Shaped Nanomembranes Epitaxially Grown on a Patterned Si[001] Substrate and Their Enhanced Light Scattering

Anna Fontcuberta i Morral, Martin Heiss, Anna Dalmau Mallorquí, Sonia Conesa Boj, Eleonora Russo, Ludovit Pavel Zweifel

We report on a new form of III-IV compound semiconductor nanostructures growing epitaxially as vertical V-shaped nanomembranes on Si(001) and study their light-scattering properties. Precise position control of the InAs nanostructures in regular arrays is ...

American Chemical Society2012

Effect of the pn junction engineering on Si microwire-array solar cells

Anna Fontcuberta i Morral, Anna Dalmau Mallorquí, Franz Michael Epple

We report on the impact of the doping concentration design on the performance of silicon microwire arrays as photovoltaic devices. We have fabricated arrays with different p- and n-doping profiles and thicknesses, obtaining mean efficiencies as high as 9.7 ...

Wiley-VCH Verlag2012

Development and characterization of EIS structures based on SiO2 micropillars and pores before and after their functionalization with phosphonate films

Anna Fontcuberta i Morral, Anna Dalmau Mallorquí

In this work electrolyte insulator semiconductor (EIS) structures based on lithographically fabricated Si SiO2 micropillars and pores are studied. The samples are characterized by means of impedance spectroscopy (IS) and they are compared to samples with a ...

Wiley2011