Publication
New Generation Transparent LPCVD ZnO Electrodes for Enhanced Photocurrent in Micromorph Solar Cells and Modules
Related publications (35)
Hydrogenated amorphous silicon
Thin-film silicon solar cells are one possible answer to the increasing energy demand of today. Hydrogenated amorphous silicon (a-Si:H) plays a crucial role therein - as absorber layers, but also as doped layers to build p-i -n junctions. This thesis is de ...
EPFL2014Light 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 Physics2014Influence of Molybdenum Oxide Interface Solvent Sensitivity on Charge Trapping in Bilayer Cyanine Solar Cells
Frank Nüesch, Roland Hany, Beat Ruhstaller
Bilayer organic solar cells based on trimethine cyanine donor and C-60 acceptor materials have been fabricated by coating the trimethine dye from solution on molybdenum oxide (MoO3) anode buffer layer. The choice of deposition solvent drastically influence ...
Amer Chemical Soc2014Low-Pressure Chemical Vapor Deposited Zinc Oxide Films
Polycrystalline zinc oxide (ZnO) films, prepared by low-pressure chemical vapor deposition are investigated in this thesis. ZnO belongs to the class of transparent conductive oxide materials, as it is transparent to light from the visible to the near-infra ...
EPFL2013Ethanol-enriched low-pressure chemical vapor deposition ZnO bilayers: Properties and growth-A potential electrode for thin film solar cells
Christophe Ballif, Sylvain Nicolay, Grégory Bugnon, Laura Ding
Ethanol is used as a precursor during the growth of zinc oxide (ZnO) by low-pressure chemical vapor deposition (LPCVD). By adding ethanol, the surface of the deposited ZnO layer is flattened and its roughness is decreased about sevenfold. The layers become ...
American Institute of Physics2013Comparison of amorphous silicon absorber materials: Light-induced degradation and solar cell efficiency
Christophe Ballif, Franz-Josef Haug, Jan-Willem Alexander Schüttauf, Matthieu Despeisse, Grégory Bugnon, Michael Elias Stückelberger
Several amorphous silicon (a-Si:H) deposition conditions have been reported to produce films that degrade least under light soaking when incorporated into a-Si:H solar cells. However, a systematic comparison of these a-Si:H materials has never been present ...
American Institute of Physics2013Coupling light into thin silicon layers for high-efficiency solar cells
Thin-film solar cells based on amorphous and microcrystalline silicon require thin photoactive layers to ensure a satisfactory collection of the photogenerated carriers. The small thickness is advantageous in terms of raw material consumption and industria ...
EPFL2013High-Quality Microcrystalline Silicon for Efficient Thin-Film Solar Cells
This thesis investigates the link between the plasma deposition conditions and microcrystalline silicon (μc-Si:H) material quality for thin-film silicon photovoltaic applications. The role of interfaces and the μc-Si:H material quality on the device perfor ...
EPFL2013Technological 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 ...
Elsevier2013A 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, Jakub Holovsky, Gaetano Parascandolo, Peter Cuony, 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