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TEM characterization of textured silicon heterojunction solar cells

Related publications (408)

Charge Formation, Recombination, and Sweep-Out Dynamics in Organic Solar Cells

This article presents a critical discussion of the various physical processes occurring in organic bulk heterojunction (BHJ) solar cells based on recent experimental results. The investigations span from photoexcitation to charge separation, recombination, ...

Wiley-Blackwell2012

Measurement of the Open-Circuit Voltage of Individual Subcells in a Dual-Junction Solar Cell

Christophe Ballif, Matthieu Despeisse, Grégory Bugnon, Jakub Holovsky, Peter Cuony, Maximilien Joseph Marie Bonnet-Eymard

Dual-junction solar cells have the potential for higher conversion efficiencies than single junctions, thanks to a better utilization of the solar spectrum. However, their optimization is more complex because the monolithic interconnection makes the indivi ...

2012

New Generation Transparent LPCVD ZnO Electrodes for Enhanced Photocurrent in Micromorph Solar Cells and Modules

Christophe Ballif, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Grégory Bugnon, Laura Ding, Fanny Sculati-Meillaud, Mustapha Benkhaira

ZnO bilayer films were deposited by low-pressure chemical vapor deposition in a single process step by controlling the differential doping of the nucleation and bulk parts of the layers. The resulting 2-μm-thick films are characterized by low free-carrier ...

2012

Experimental Evaluation of the Light Trapping Potential of Optical Nanostructures for Thin-Film Silicon Solar Cells

Christophe Ballif, Corsin Battaglia, Jordi Escarre Palou, Mathieu Gérard Boccard, Karin Söderström

We describe a method based on nanoimprinting and non-absorbing insulating silicon nitride electrodes for evaluating the light trapping potential of photonic nanostructures for thin-film silicon solar cells. We validate our method by relating the optical re ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2012

Geometric light trapping for high efficiency thin film silicon solar cells

Christophe Ballif, Franz-Josef Haug, Corsin Battaglia, Jordi Escarre Palou, Matthieu Despeisse, Sylvain Nicolay, Grégory Bugnon, Laura Ding

The imprinting of random square based pyramidal textures with micrometric scale at the air/glass interface of thin film silicon solar cells is presented as an efficient alternative to anti-reflective coatings to minimize reflection losses at the cell entra ...

Elsevier2012

Thin-film silicon solar cells applying optically decoupled back reflectors

Christophe Ballif, Sylvain Nicolay, Laura Ding, Etienne Antoine Julien Moulin, Lorenzo Fanni

Thin-film silicon solar cells often apply a metal back reflector (BR) separated from the silicon layers by a thin rear dielectric of thickness around 80 nm or a white paint combined with a thick rear dielectric of several micrometers. In this work, we inve ...

Elsevier2012

High-Efficiency Amorphous Silicon Solar Cell on a Periodic Nanocone Back Reflector

Christophe Ballif, Franz-Josef Haug, Corsin Battaglia, Céline Pahud

An amorphous silicon solar cell on a periodic nanocone back reflector with a high 9.7% initial conversion efficiency is presented. The optimized back-reflector morphology provides powerful light trapping and enables excellent electrical cell performance. U ...

2012

Highly transparent ZnO bilayers by LP-MOCVD as front electrodes for thin-film micromorph silicon solar cells

Christophe Ballif, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay, Grégory Bugnon, Laura Ding, Mustapha Benkhaira

ZnO bilayer films were deposited by a low-pressure metalorganic chemical vapor deposition technique in a single process step, by doping with boron only the nucleation stage of the growth. The resulting 2 pm thick layers are characterized by low free carrie ...

Elsevier2012

Light trapping in solar cells: Analytical modeling

Christophe Ballif, Franz-Josef Haug, Corsin Battaglia, Matthieu Despeisse, Mathieu Gérard Boccard

We model analytically light harvesting in realistic solar cells by extending a formalism suggested by Deckman et al. [Appl. Phys. Lett. 42, 110968 (1983)], based on tracing of an average ray of light. Arbitrary light scattering schemes and parasitic absorp ...

American Institute of Physics2012

Integrated long-range thermal bimorph actuators for parallelizable bio-AFM applications

Jürgen Brugger, Rosario Maurizio Gullo, Jonas Gustav Henriksson

AFM-based cell force spectroscopy is an emerging research method that already has enhanced our understanding of the structural changes that take place in a cell as it becomes cancerous. However, the method is limited as it is not time-efficient in its curr ...

Ieee2012

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