Esther Alarcon Llado

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Publications associées (26)

Polarization response of nanowires a la carte

Anna Fontcuberta i Morral, Esther Alarcon Llado, Alberto Casadei, Martin Heiss, Francesca Amaduzzi, Eleonora Russo

Thanks to their special interaction with light, semiconductor nanowires have opened new avenues in photonics, quantum optics and solar energy harvesting. One of the major challenges for their full technological deployment has been their strong polarization ...

Nature Publishing Group2015

Efficient Multiterminal Spectrum Splitting via a Nanowire Array Solar Cell

Anna Fontcuberta i Morral, Esther Alarcon Llado

Nanowire-based solar cells opened a new avenue for increasing conversion efficiency and rationalizing material use by growing different III-V materials on silicon substrates. Here, we propose a multiterminal nanowire solar cell design with a theoretical co ...

Amer Chemical Soc2015

Field-effect passivation on silicon nanowire solar cells

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

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

Modulation of Fluorescence Signals from Biomolecules along Nanowires Due to Interaction of Light with Oriented Nanostructures

Anna Fontcuberta i Morral, Esther Alarcon Llado

High aspect ratio nanostructures have gained increasing interest as highly sensitive platforms for biosensing. Here, well-defined biofunctionalized vertical indium arsenide nanowires are used to map the interaction of light with nanowires depending on thei ...

American Chemical Society2015

Probing inhomogeneous composition in core/shell nanowires by Raman spectroscopy

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

Due to its non-destructive and its micro-spatial resolution, Raman spectroscopy is a powerful tool for a rapid structural and compositional characterization of nanoscale materials. Here, by combining the compositional dependence of the Raman peaks with the ...

American Institute of Physics2014

III-V nanowire arrays: growth and light interaction

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

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

BiVO4 thin film photoanodes grown by chemical vapor deposition

Esther Alarcon Llado, Le Chen

BiVO4 thin film photoanodes were grown by vapor transport chemical deposition on FTO/glass substrates. By controlling the flow rate, the temperatures of the Bi and V sources (Bi metal and V2O5 powder, respectively), and the temperature of the deposition zo ...

Royal Soc Chemistry2014

Ga-assisted growth of GaAs nanowires on silicon, comparison of surface SiOx of different nature

Anna Fontcuberta i Morral, Federico Matteini, Esther Alarcon Llado, Gözde Tütüncüoglu

Physical properties of surfaces are extremely important for initiation and nucleation of crystal growth, including nanowires. In recent years, fluctuations in surface characteristics have often been related to unreproducible growth of GaAs nanowires on Si ...

Elsevier2014

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

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

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

P-type InGaN across the entire alloy composition range

Esther Alarcon Llado

A systematic investigation on Mg doped and undoped InGaN epilayers grown by plasma-assisted molecular beam epitaxy has been conducted. Single phase InGaN alloys across the entire composition range were synthesized and Mg was doped into InxGa1-xN (0.1

Amer Inst Physics2013

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Modulation of Fluorescence Signals from Biomolecules along Nanowires Due to Interaction of Light with Oriented Nanostructures

Anna Fontcuberta i Morral, Esther Alarcon Llado

American Chemical Society2015