PVLAB

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.

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RECENT PUBLICATIONS

Design Rules to Fully Benefit From Bifaciality in Two-Terminal Perovskite/Silicon Tandem Solar Cells

O. Dupre; A. Tuomiranta; Q. Jeangros; M. Boccard; P-J. Alet et al. 

Ieee Journal Of Photovoltaics. 2020-05-01. Vol. 10, num. 3, p. 714-721. DOI : 10.1109/JPHOTOV.2020.2973453.

Building Integrated Photovoltaics

E. Rey; C. Ballif 

Schlussveranstaltung “Nationales Forschungsprogramm Energie” , Gurten-Pavillon, Bern, Switzerland, , January 23, 2020.

Influence of local surface defects on the minority-carrier lifetime of passivating-contact solar cells (vol 116, 113901, 2020)

J. Cattin; J. Haschke; C. Ballif; M. Boccard 

Applied Physics Letters. 2020-04-13. Vol. 116, num. 15, p. 159901. DOI : 10.1063/5.0008864.

Influence of the Subcell Properties on the Fill Factor of Two-Terminal Perovskite-Silicon Tandem Solar Cells

M. Boccard; C. Ballif 

Acs Energy Letters. 2020-04-10. Vol. 5, num. 4, p. 1077-1082. DOI : 10.1021/acsenergylett.0c00156.

Influence of local surface defects on the minority-carrier lifetime of passivating-contact solar cells

J. Cattin; J. Haschke; C. Ballif; M. Boccard 

Applied Physics Letters. 2020-03-17. Vol. 116, num. 11, p. 113901. DOI : 10.1063/1.5145351.

Lateral transport in silicon solar cells

J. Haschke; G. Christmann; C. Messmer; M. Bivour; M. Boccard et al. 

Journal of Applied Physics. 2020-03-16. Vol. 127, num. 11, p. 114501. DOI : 10.1063/1.5139416.

23.5%-efficient silicon heterojunction silicon solar cell using molybdenum oxide as hole-selective contact

J. Dréon; Q. Jeangros; J. Cattin; J. Haschke; L. Antognini et al. 

Nano Energy. 2020-01-03. Vol. 70, p. 104495. DOI : 10.1016/j.nanoen.2020.104495.

Dopant‐free back contacted silicon solar cells with an efficiency of 22.1%

W. Wu; W. Lin; S. Zhong; B. Paviet-Salomon; M. Despeisse et al. 

Physica Status Solidi RRL – Rapid Research Letters. 2020-01-03. DOI : 10.1002/pssr.201900688.

Characterisation of Silicon Heterojunction Solar Cells Beyond Standard Test Conditions

J. Cattin / C. Ballif; M. G. Boccard (Dir.)  

Lausanne, EPFL, 2020. 

Solar Water Splitting with Perovskite/Silicon Tandem Cell and TiC-Supported Pt Nanocluster Electrocatalyst

J. Gao; F. Sahli; C. Liu; D. Ren; X. Guo et al. 

Joule. 2019-12-18. Vol. 3, num. 12, p. 2930-2941. DOI : 10.1016/j.joule.2019.10.002.