EPFL/STI/IMT/PVlab
Expert in thin film solar cells on glass and flexible substrates
Christophe Ballif
EPFL
Synergy
Realizing photovoltaic energy harvesting systems based on tandem solar cells with efficncy beyond that achievable with state-of-the-art industrial single-junction cells
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CSEM
Expert in photovoltaics and thin-film electronics
Julien Bailat
CSEM
EPFL/STI/IMX/LMSC 
Expert in Semiconductor nanostructure combinations, nanowires, chemical vapor deposition, catalyst-free molecular beam epitaxy
Anna Fontcuberta i Morral
EPFL
EPFL/SB/ISIC/LPI
Expert in semiconductor nanocrystallites and mesoscopic oxide films
Michael Graetzel
EPFL
EPFZ/LSTP
Expert in ultra-high efficiency low weight cells
Ayodhya Tiwari
EPFZ

Project Description

This project aims to realize photovoltaic (PV) energy harvesting systems based on tandem solar cells with efficiencies beyond those achievable with state-of-the-art industrial single-junction cells by combining the unique technological components – record cells absorbing various parts of the solar spectrum – recently realized by Swiss research institutes. By themselves, the new multi-junction cells will be highly complex systems, and will open opportunities for tomorrow’s electricity power plants and for consumer electronic applications, including e.g. watches and powering of low-consumption electronics. The project is supported by key players of the PV field (Meyer Burger) and of the watch and electronic industries (Swatch Group R&D and EM Marin). 

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Our researchers in the media

Notable publications

Impact of the Ga droplet wetting, morphology, and pinholes on the orientation of GaAs nanowires
Federico Matteini, Gozde Tutuncuoglu, Dmitry Mikulik, Jelena Vukajlovic-Plestina, Heidi Potts, Jean-Baptiste Leran, W Craig Carter, Anna Fontcuberta i Morral
Crystal Growth & Design

A vacuum flash–assisted solution process for high-efficiency large-area perovskite solar cells
X. Li, D. Bi, C. Yi, J.-D. Décoppet, J. Luo, S.M. Zakeeruddin, A. Hagfeldt, M. Graetzel
Science, 10.1126/science.aaf8060

A Novel Dopant-Free Triphenylamine Based Molecular 'Butterfly' Hole-Transport Material for Highly Efficient and Stable Perovskite Solar Cells
F. Zhang, C. Yi, P. Wei, X. Bi, J. Luo, G. Jacopin, S. Wang, X. Li, Y. Xiao, S.M. Zakeeruddin, M. Graetzel
Adv. Energy Mat., Ahead of Print, DOI:10.1002/aenm.201600401

Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency
M. Saliba, T. Matsui, J. Seo, K. Domanski, J.-P. Correa-Baena, Md.K. Nazeeruddin, S.M. Zakeeruddin, W. Tress, A. Abate, A. Hagfeldt, M. Graetzel
Energy & Environ. Science, 9, 1989-1997


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Posters from 2016


Recent advances in perovskite solar cells at LPI
Jingshan Luo, Dongqin Bi, Fabrizio Giordano, Chenyi Yi, Michael Saliba, Xiong Li, Shaik M. Zakeeruddin, Michael Grätzel*

Development of Near Infrared Transparent Perovskite Solar Cells for Tandem Application combined with Cu(In,Ga)Se2
Fan Fu, Stefano Pisoni, Thomas Feurer, Stephan Buecheler, Ayodhya N. Tiwari

Conductive-AFM characterization of NW-based solar cells
Dmitry Mikulik, Maria Ricci, Jelena Vukajlovic, Federico Matteini, Natasa Vulic, Esther Alarcon Llado, Heidi Potts, Gozde Tutuncuoglu and Anna Fontcuberta i Morral

Towards III-V / Si tandem solar cells
Jelena Vukajlovic, Federico Matteini, Dmitry Mikulik, Natasa Vulic, Gozde Tutuncouglu, Heidi Potts, Esther Alarcon Llado and Anna Fontcuberta i Morral


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Posters from 2015


Laser Scribing Patterning for the Production of Organometallic Halide Perovskite Solar Modules
Soo-Jin Moon, Jun-Ho Yum, Linus Löfgren, Arnaud Walter, Laurent Sansonnens, Mustapha Benkhaira, Sylvain Nicolay, Julien Bailat, Christophe Ballif

Towards flexible GaAs Nanowire solar cells
Federico Matteini, Dmitri Mikulik, Jelena Vukajlovic, Gozde Tutuncuoglu, Heidi Potts and Anna Fontcuberta i Morral

Development of Near Infrared Transparent Perovskite Solar Cell for Tandem Applications with Cu(In,Ga)Se2
Fan Fu, Thomas Feurer, Lukas Kranz, Patrick Reinhard, Timo Jager, Martin Statz, Johannes Loeckinger, Stephan Buecheler, Ayodhya N. Tiwari

Near-infrared transparent perovskite solar cells for tandem applications
Jérémie Werner, Philipp Löper, Arnaud Walter, Silvia Martin de Nicolas, Stephaan de Wolf, Monica Morales-Masis, Björn Niesen, Christophe Ballif

Posters from 2014


Tandem solar cells based on a-Si/c-Si heterojunction cells
Bjoern Niesen, Philipp Löper, Martin Ledinsky, Silvia Martín de Nicolás, Stefaan de Wolf, Christophe Ballif

Perovskite/CIGS Tandem Structure Solar Cell
Fan Fu, Johannes Loeckinger, Lukas Kranz, Timo Jaeger, Patrick Reinhard, Benjamin Bissig, Fabian Pianezzi, Ayodhya N. Tiwari, Stephan Buecheler

Integration of GaAs nanowires on Si for photovoltaic applications
Jelena Vukajlovic*, Federico Matteini*, Eleonora Russo-Averchi, Anna Dalmau Mallorqui, esther alarcon llado, Gozde Tutuncuoglu, Daniel Rueffer, Heidi Potts, Anna Fontcuberta i Morral

Mechanism of low temperature, aqueous solution deposition of conductive Al-doped ZnO
Peter Fuchs; Jan van den Broek; Harald Hagendorfer; Yaroslav Romanyuk; Ayodhya N. Tiwari


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Project Photos