PV-lab

The laboratory of photovoltaics and thin-films electronics (PV-lab) of IEM, founded in 1984 by Prof. Arvind Shah and headed by Prof. Christophe Ballif since 2004, has pioneered several new processes for the preparation of thin-film silicon, such as the introduction of very high frequency (VHF) plasma deposition and microcrystalline silicon as an efficient photovoltaic material, and simple processing of heterojunction crystalline cells. Current activities of the laboratory cover a broad spectrum, ranging from fundamental research to industrial technology transfer. The lab masters processes of device fabrication for a wide variety of transparent conductive oxides, thin-film solar cells and high-efficiency crystalline silicon solar cells. It also has expertise for specialty detectors. It has full facilities for packaging of PV products. It has been designated as a center of national importance by the Swiss Federal Office for Energy.

PV-lab is a founding partner of the CSEM PV-center, which started operation in 2013 with a focus on technology transfer, and industrialisation of technologies.

LATEST NEWS

© 2024, SNEC PV+

Global solar scientist award to Christophe!

— During the conference, the second "Global Solar Leaders" award ceremony was held. The awards were divided into two categories: Global Solar Energy Leader and Global Solar Scientist. Christophe Ballif was recognized as a "Global Solar Scientist," along with other distinguished scientists such as Martin Green, Pierre Verlinden, Shen Hui, and Xu Xixiang…

Presentation of the Soleva campervan at the "PVinMotion2024" conference, organized by CSEM © CSEM

Self-powered solar campervan embarks on Swiss tour

— The Swiss technology innovation center CSEM has announced that Soleva, a campervan powered by 100% self-produced solar energy, has begun a tour of Switzerland. The project of EPFL alumni, the campervan is equipped with lightweight solar panel technology developed by CSEM in collaboration with EPFL's Thin-Film Photovoltaics Lab (PV-Lab).

Solar energy, which is both abundant and free, is poised to become the world’s leading power source by 2050. © iStock

The bright future of solar energy

— Solar energy, which is both abundant and free, is poised to become the world’s leading power source by 2050. That’s thanks largely to technological advances and the unbridled manufacturing of solar cells, which bodes well for a successful energy transition.

© 2024 Elsevier

Latest Review Paper about colouring technologies for BIPV!

— PV-Lab is happy to share that our latest review paper "Colouring solutions for building integrated photovoltaic modules: A review" has been published in Energy and Buildings! This work gives an overview of the various colouring solutions for BIPV including processes, power losses, costs, reliability and measurement techniques.

© 2024 Joule

Paper alert – over 30%-efficient perovskite-Si(front-flat) tandems!

— PV-Lab is happy to share that our latest paper "Synergetic substrate and additive engineering for over 30%-efficient perovskite-Si tandem solar cells" has been published in Joule! The 30.9% certified solar cell, was also the first worldwide to be certified over 30% using a flat front silicon wafer!

© 2024 EES

Paper alert – single grain level to devices in perovskite PV!

— PV-Lab is happy to share that our latest paper "Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal–halide perovskites" has been published in Energy & Environmental Science !

© 2024 OAA

Best poster award at SiliconPV 2024!

— Olatz Arriaga Arruti (R&D engineer in CSEM and EPFL PV-Lab Ph.D graduate) won the best poster award at the SiliconPV 2024 with her poster named 'Are All Bifacial High-Efficiency c-Si Technologies Equally Sensitive to Potential-Induced Degradation?'. Congratulations to Olatz and all the co-authors! 

© 2024 Christof Bucher

Swiss Photovoltaic conference in Lausanne: some highlights and award!

— Swiss Photovoltaic conference in Lausanne: some highlights and best Poster Award for Hugo Quest from PV-Lab & 3S!

© 2024 EPFL

Proceedings of 11th Metallization and Interconnection Workshop

— “Proceedings of the 11th Metallization and Interconnection Workshop for Crystalline Silicon Solar Cells 2023 hosted by EPFL PVLab & CSEM in Neuchatel is freshly published online as a special issue in Solar Energy Materials and Solar Cells. The two days’ of the 11th edition of the workshop were a success with more than 100 specialists coming from 17 countries.“

© 2024 AM

Paper alert – Boosting the performance and lifetime of tandems !

— PV-Lab is happy to share that our latest paper "A Universal Perovskite/C60 Interface Modification via Atomic Layer Deposited Aluminum Oxide for Perovskite Solar Cells and Perovskite–Silicon Tandems" has been published in Advanced Materials !

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RECENT PUBLICATIONS

From PV to EV: Mapping the Potential for Electric Vehicle Charging with Solar Energy in Europe

N. Jeannin; A. Pena Bello; J. Dumoulin; D. Wannier; C. Ballif et al. 

International Journal of Sustainable Energy Planning and Management. 2024-06-19. Vol. 41, p. 45-57. DOI : 10.54337/ijsepm.8151.

Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal-halide perovskites

M. Othman; Q. Jeangros; D. A. Jacobs; M. H. Futscher; S. Zeiske et al. 

Energy & Environmental Science. 2024-05-09. DOI : 10.1039/d4ee00901k.

Nanostructure and Optical Property Tailoring of Zinc Tin Nitride Thin Films through Phenomenological Decoupling: A Pathway to Enhanced Control

C. Hain; K. Wieczerzak; D. Casari; A. Sharma; A. Xomalis et al. 

Acs Applied Nano Materials. 2024-03-11. Vol. 7, num. 6, p. 6242–6252. DOI : 10.1021/acsanm.3c06178.

A Universal Perovskite/C60 Interface Modification via Atomic Layer Deposited Aluminum Oxide for Perovskite Solar Cells and Perovskite-Silicon Tandems

K. Artuk; D. Turkay; M. D. Mensi; J. A. Steele; D. A. Jacobs et al. 

Advanced Materials. 2024-02-19. DOI : 10.1002/adma.202311745.

Reliability and Long-term Performance of Building Integrated Photovoltaic (BIPV) Modules

E. Özkalay / C. Ballif; A. F. A. Virtuani (Dir.)  

Lausanne, EPFL, 2024. 

HASPIDE: a project for the development of hydrogenated amorphous silicon radiation sensors on a flexible substrate

L. Tosti; L. Antognini; S. Aziz; A. Bashiri; L. Calcagnile et al. 

Journal Of Instrumentation. 2024-04-01. Vol. 19, num. 4, p. C04025. DOI : 10.1088/1748-0221/19/04/C04025.

Stress tolerance of lightweight glass-free PV modules for vehicle integration

U. B. Desai; K. Nicolet; S. Prabhudesai; G. Cattaneo; J. Robin et al. 

Epj Photovoltaics. 2024-04-01. Vol. 15, p. 10. DOI : 10.1051/epjpv/2024003.

Characterization of a flexible a-Si:H detector for in vivo dosimetry in therapeutic x-ray beams

M. J. Large; A. Bashiri; Y. Dookie; J. McNamara; L. Antognini et al. 

Medical Physics. 2024-03-03. DOI : 10.1002/mp.17013.

Interactions between aluminium and fired passivating contacts during fire-through metallization (vol 249, 112051, 2023)

S. Libraro; M. Lehmann; J. J. D. Leon; C. Allebe; A. Descoeudres et al. 

Solar Energy Materials And Solar Cells. 2024-02-06. Vol. 267, p. 112722. DOI : 10.1016/j.solmat.2024.112722.

The effect of partial shading on the reliability of photovoltaic modules in the built-environment

E. Ozkalay; F. Valoti; M. Caccivio; A. Virtuani; G. Friesen et al. 

Epj Photovoltaics. 2024-02-28. Vol. 15, p. 7. DOI : 10.1051/epjpv/2024001.