Publication

Temperature dependence of the optical absorption coefficient of microcrystalline silicon

Publications associées (34)

Energy Yield and Electricity Management of Thin-Film and Crystalline Silicon Solar Cells

In the case of high photovoltaic (PV) penetration into the electricity grid, the energy produced by a PV system that is effectively used (useful energy) depends on the energy yield and on how this energy is managed to avoid detrimental effects occurring at ...

EPFL2016

We study the nonequilibrium interplay between disorder and interactions in a closed quantum system. We base our analysis on the notion of dynamical state-space localization, calculated via the Loschmidt echo. Although real-space and state-space localizatio ...

Iop Publishing Ltd2016

Silicon oxide buffer layer at the p-i interface in amorphous and microcrystalline silicon solar cells

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Michael Elias Stückelberger, Gaetano Parascandolo, Mathieu Charrière

The use of intrinsic silicon oxide as a buffer layer at the p-i interface of thin-film silicon solar cells is shown to provide significant advantages. For microcrystalline silicon solar cells, when associated with highly crystalline i-layers deposited at h ...

Elsevier2014

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Elsevier2013

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The chemical compositions of defective regions in microcrystalline thin film Si solar cells are studied using energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy (EELS) in the scanning transmission electron microscope. Nanometer-reso ...

American Institute of Physics2013

Technological status of plasma-deposited thin-film silicon photovoltaics

Christophe Ballif, Arvind Shah, Etienne Antoine Julien Moulin

Basic properties of plasma-deposited amorphous and microcrystalline layers are summarized. Limitations for solar cell performance, which are a result of these basic properties are pointed out. Efficiencies and other solar cell parameters obtained for the b ...

Elsevier2013

High band gap thin film silicon solar cells are of high interest for the use as top cell in triple junctions solar cells. Protocrystalline silicon, in the transition phase between amorphous and microcrystalline silicon, is such a high band gap material. Du ...

2012

Optimization of thin film silicon solar cells on highly textured substrates

Christophe Ballif, Corsin Battaglia, Matthieu Despeisse, Mathieu Gérard Boccard, Grégory Bugnon, Thomas Söderström, Gaetano Parascandolo, Peter Cuony, Simon Hänni, Mathieu Charrière, Nils Linus Löfgren

Doped layers made of nanostructured silicon phases embedded in a silicon oxide matrix were implemented in thin film silicon solar cells. Their combination with optimized deposition processes for the silicon intrinsic layers is shown to allow for an increas ...

2011

Realization of high efficiency micromorph tandem silicon solar cells on glass and plastic substrates: Issues and potential

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Andrea Feltrin, Peter Cuony, Martin Python

High conversion efficiency for (amorphous/microcrystalline) "micromorph" tandem solar cells requires both a dedicated light management, to keep the absorber layers as thin as possible, and optimized growth conditions of the microcrystalline silicon (μc-Si: ...

2011

Impact of secondary gas-phase reactions on microcrystalline silicon solar cells deposited at high rate

Christophe Ballif, Grégory Bugnon, Andrea Feltrin, Thomas Söderström, Benjamin Strahm, Gaetano Parascandolo

The role of secondary gas-phase reactions during plasma-enhanced chemical vapor deposition of microcrystalline silicon is a controversial subject. In this paper, we show that the enhancement of such reactions is associated with the improvement of material ...

American Institute of Physics2010

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