The Photovoltaics-Laboratory (PV-Lab) of IMT, 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.



35 years of photovoltaics: Analysis of the TISO-10-kW solar plant, lessons learnt in safety and performance – Part 2

E. Annigoni; A. Virtuani; M. Cavvicio; G. Friesen; D. Chianese et al. 

Progress in Photovoltaics: Research and Applications. 2019. 

Quantifying and modeling the impact of interconnection failures on the electrical performance of crystalline silicon photovoltaic modules

E. Annigoni; A. Virtuani; J. Levrat; A. Faes; F. Sculati-Meillaud et al. 

Progress in Photovoltaics: Research and Applications. 2019. DOI : 10.1002/pip.3111.

One-type-fits-all-systems: Strategies for preventing potential-induced degradation in crystalline silicon solar photovoltaic modules

A. Virtuani; E. Annigoni; C. Ballif 

Progress In Photovoltaics. 2019-01-01. DOI : 10.1002/pip.3066.

Amorphous silicon-based micro-channel plate detectors with high multiplication gain

J. Loffler; C. Ballif; N. Wyrsch 

Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment. 2018-12-21. DOI : 10.1016/j.nima.2017.12.036.

Thermo-mechanical stability of lightweight glass-free photovoltaic modules based on a composite substrate

A. C. Martins; V. Chapuis; A. Virtuani; H-Y. Li; L-E. Perret-Aebi et al. 

Solar Energy Materials And Solar Cells. 2018-12-01. DOI : 10.1016/j.solmat.2018.07.015.

Silicon Heterojunction Solar Cells on Quasi-mono Wafers

J. Haschke; M. M. Kivambe; J. Horzel; R. Monnard; L. Barraud et al. 

2018-11-29. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC), Waikoloha, Hawaii, USA, June 10-15, 2018. p. 314-316. DOI : 10.1109/PVSC.2018.8547935.

Interdigitated back contact silicon heterojunction solar cells featuring an interband tunnel junction enabling simplified processing

B. Paviet-Salomon; A. Tomasi; D. Lachenal; N. Badel; G. Christmann et al. 

Solar Energy. 2018-11-15. DOI : 10.1016/j.solener.2018.01.066.

Crystalline Silicon Solar Cells With Coannealed Electron- and Hole-Selective SiCx Passivating Contacts

G. Nogay; A. Ingenito; E. Rucavado; Q. Jeangros; J. Stuckelberger et al. 

Ieee Journal Of Photovoltaics. 2018-11-01. DOI : 10.1109/JPHOTOV.2018.2866189.

A passivating contact for silicon solar cells formed during a single firing thermal annealing

A. Ingenito; G. Nogay; Q. Jeangros; E. Rucavado; C. Allebe et al. 

Nature Energy. 2018-09-01. DOI : 10.1038/s41560-018-0239-4.

Nitride layer screening as carrier-selective contacts for silicon heterojunction solar cells

A. N. Fioretti; M. Boccard; A. C. Tamboli; A. Zakutayev; C. Ballif 

AIP Conference Proceedings. 2018-08-10. DOI : 10.1063/1.5049270.