Publication

Cu(In1-xGax)S-2 nanocrystals and films: low-temperature synthesis with size and composition control

Related publications (32)

Synthesis, structural and magnetic characterization of thin films of the chiral magnets CoZnMn and FeGe

Skyrmions are topologically protected nanometer-sized magnetic vortices that have sparked interest for future spintronics applications aiming at high-density, high-speed and low-power consuming magnetic memory devices. One type of skyrmions appears in non- ...

EPFL2021

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Large-scale deployment of thin-film photovoltaics will be facilitatedthrough earth-abundant components. Herein, selective area epitaxyand lateral overgrowth epitaxy are explored for the growth of zincphosphide (Zn3P2), a promising earth-abundant absorber. ...

2020

TCOs are a class of metal oxides that combine transparency to visible light with electrical conductivity. Each TCO is characterized by the trade-off of these two properties which can be tuned for a particular application. This thesis is dedicated to the in ...

EPFL2016

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Thin, light-absorbing films attenuate the Raman signal of underlying substrates. In this article, we exploit this phenomenon to develop a contactless thickness profiling method for thin films deposited on rough substrates. We demonstrate this technique by ...

Nature Publishing Group2016

Light trapping in thin-film solar cells measured by Raman spectroscopy

Christophe Ballif, Grégory Bugnon, Etienne Antoine Julien Moulin, Martin Ledinsky

In this study, Raman spectroscopy is used as a tool to determine the light-trapping capability of textured ZnO front electrodes implemented in microcrystalline silicon (mu c-Si:H) solar cells. Microcrystalline silicon films deposited on superstrates of var ...

American Institute of Physics2014

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This book chapter presents an overview of thin-film silicon (both amorphous and microcrystalline) technology and its application to the fabrication of tandem and multiple-junction solar cells. It reviews the material relevant properties for this applicatio ...

Royal Society of Chemistry Publishing2014

Angular behavior of the absorption limit in thin film silicon solar cells

Christophe Ballif, Hans Peter Herzig, Franz-Josef Haug, Corsin Battaglia, Toralf Scharf, Karin Söderström, Vincent Paeder, Ali Naqavi

We investigate the angular behavior of the upper bound of absorption provided by the guided modes in thin film solar cells. We show that the 4n2 limit can be potentially exceeded in a wide angular and wavelength range using two-dimensional periodic thin fi ...

Wiley-Blackwell2014

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We investigate the angular behavior of the upper bound of absorption provided by the guided modes in thin film solar cells. We show that the 4n(2) limit can be potentially exceeded in a wide angular and wavelength range using two-dimensional periodic thin ...

Wiley-Blackwell2014

Cu(In1−xGax)S2 nanocrystals and films: low-temperature synthesis with size and composition control

Giorgio Margaritondo

Cu(In1-xGax)S2 is a potential competitor of Cu(In1-xGax)Se2 (CIGS) for photovoltaic technology, with environmental, optical and cost advantages. But it still requires effective fabrication techniques. We demonstrate a single-step X-ray irradiation process ...

2013

Absorption enhancement in thin-film silicon solar cells

Ali Naqavi

Thin-film silicon technology is a major candidate to comply with the ever-increasing global energy demand. The small thickness of silicon allows high industrial throughput and low material usage and subsequently opens new avenues to mass-production of low- ...

EPFL2013

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