Publications de Gaetano Parascandolo

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

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

High-efficiency microcrystalline silicon single-junction solar cells

Christophe Ballif, Matthieu Despeisse, Jordi Escarre Palou, Mathieu Gérard Boccard, Grégory Bugnon, Gaetano Parascandolo, Simon Hänni

This short communication highlights our latest results towards high-efficiency microcrystalline silicon single-junction solar cells. By combining adequate cell design with high-quality material, a new world record efficiency was achieved for single-junctio ...

Wiley-Blackwell2013

Light Harvesting Schemes for High Efficiency Thin Film Silicon Solar Cells

Christophe Ballif, Corsin Battaglia, Matthieu Despeisse, Jordi Escarre Palou, Mathieu Gérard Boccard, Sylvain Nicolay, Laura Ding, Gaetano Parascandolo, Grégory Bugnon, Peter Cuony

In Thin Film Silicon (TF-Si) solar cells light harvesting schemes must guarantee an efficient light trapping in the thin absorber layers without decreasing the silicon layers quality and consecutively the p-i-n diodes electrical performance. TF-Si solar ce ...

Ieee2012

Multiple-junction photoelectric device and its production process

Christophe Ballif, Matthieu Despeisse, Gaetano Parascandolo, Peter Cuony

The present invention relates to a multiple-junction photoelectric device comprising, in sequence, a substrate (4), a first conducting layer (2), at least two elementary photoelectric devices (6, 10), at least one of said elementary photoelectric devices ( ...

2012

A New View of Microcrystalline Silicon: The Role of Plasma Processing in Achieving a Dense and Stable Absorber Material for Photovoltaic Applications

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Thomas Söderström, Gaetano Parascandolo, Peter Cuony, Jakub Holovsky, Simon Hänni

To further lower production costs and increase conversion efficiency of thin-film silicon solar modules, challenges are the deposition of high-quality microcrystalline silicon (μc-Si:H) at an increased rate and on textured substrates that guarantee efficie ...

2012

Microcrystalline and micromorph device improvements through combined plasma and material characterization techniques

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

Hydrogenated microcrystalline silicon (μc-Si:H) growth by very high frequency plasma-enhanced chemical vapor deposition (VHF-PECVD) is studied in an industrial-type parallel plate KAI reactor. Combined plasma and material characterization techniques allow ...

Elsevier B.V Amsterdam2011

High-rate deposition of microcrystalline silicon in a large-area PECVD reactor and integration in tandem solar cells

Christophe Ballif, Grégory Bugnon, Andrea Feltrin, Gaetano Parascandolo

We study the high-rate deposition of microcrystalline silicon in a large-area plasma-enhanced chemical-vapor-deposition (PECVD) reactor operated at 40.68 MHz, in the little-explored process conditions of high-pressure and high-silane concentration and depl ...

2010

Research and developments in thin film silicon photovoltaics

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Grégory Bugnon, Sylvie Faÿ, Andrea Feltrin, Thomas Söderström, Gaetano Parascandolo, Martin Python

The increasing demand for photovoltaic devices and the associated crystalline silicon feedstock demand scenario have led in the past years to the fast growth of the thin film silicon industry. The high potential for cost reduction and the suitability for b ...

2009

Development of Micromorph Cells in Large-Area Industrial Reactor

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Andrea Feltrin, Gaetano Parascandolo, Adrian Billet

The influences of the deposition pressure and silane depletion on the efficiency of single-junction microcrystalline silicon solar cells has been investigated. The efficiency is found to correlate with the ion energy which affects the density of states in ...

2009

LATEST DEVELOPMENTS ON MICROMORPH TANDEM CELLS AT IMT

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Andrea Feltrin, Gaetano Parascandolo

The latest developments on micromorph tandem cells in small area laboratory and large area industrial PE-CVD systems are reviewed. We report on a 13.3% initial efficiency micromorph tandem cell deposited in our small area system. The development of an in-s ...

2009